How to Spot Rare Errors on the 2023 $5 Gold Eagle Elliptical Planchet: A Variety & Error Hunter’s Deep Dive

Most people look right past the tiny details that can turn a common item into a rarity worth thousands. In my years of hunting error coins and varieties, I’ve learned that the real treasures aren’t always the ones that jump out at you—they’re the ones that whisper their secrets to those patient enough to listen. Today, I want to walk you through one of the most dramatic modern U.S. gold errors ever documented: the 2023 $5 Gold Eagle struck on an elliptical planchet. But more than just marveling at this singular oddity, I’m going to use it as a teaching tool to help you understand the die cracks, double dies, mint mark variations, and planchet errors that can transform an ordinary coin into a five-figure rarity.

The 2023 $5 Gold Eagle Elliptical Planchet: What Makes It So Extraordinary

Let’s start with the coin that’s been making waves across the error collecting community. A modern U.S. gold coin should not look like this. The U.S. Mint strikes the $5 American Gold Eagle on a round, carefully prepared planchet. The normal one-tenth-ounce Gold Eagle carries a $5 face value, measures 16.50 mm in diameter, contains exactly 0.1000 troy ounce of gold, and weighs 3.393 grams. Every single one of those specifications is critical to understanding why this error is so remarkable.

Yet this particular 2023 $5 Gold Eagle weighs only 3 grams—nearly 12% underweight. More importantly, it did not leave the press round. It left as a football-shaped gold coin with missing design elements, missing edge detail, and a mint-made error story that virtually no other U.S. gold coin can match. It has been certified as NGC MS-69, which means that despite its dramatic planchet error, the strike itself is nearly pristine. The luster is exceptional, and the eye appeal is undeniable. The coin is encapsulated in a Black Retro Holder with a Miles Standish signed label, adding further provenance and pedigree.

As Mike Byers reported in his CoinWeek article, this is believed to be the only U.S. gold coin ever struck on an elliptical planchet. Let that sink in. In the entire history of the U.S. Mint’s American Gold Eagle program—which dates back to 1986—no other gold coin has been documented with this type of planchet error. That makes it not just rare, but potentially unique. The numismatic value of being the sole known example of a major error on U.S. gold is almost impossible to overstate.

“There are very few mint errors on American Eagle gold denominations. Additionally it is the only known U.S. gold coin struck on an elliptical planchet.”

Understanding Planchet Errors: The Foundation of Error Hunting

To truly appreciate what makes this coin special, you need to understand how planchets are made and where things can go wrong. This is fundamental knowledge for any serious error coin hunter, so let me break it down.

The Blanking Process: Where Elliptical Planchets Are Born

The journey of a coin begins with a long strip of metal called a blank or strip. This strip is fed into a blanking press, which punches out round discs—the planchets that will eventually become coins. The process is highly automated and precise, but it’s not infallible.

An elliptical (or “football-shaped”) planchet occurs when the blanking press misfeeds the strip, resulting in an off-center punch that doesn’t fully overlap the previous cut. Instead of a perfect round disc, you get an elongated, oval-shaped piece. In the case of this Gold Eagle, the strip was likely misaligned or advanced incorrectly, causing the punch to create an oblong shape rather than a circle. The “missing” crescent-shaped piece would have been caught in the quality control process—or at least it should have been.

Here’s what you should know about planchet errors in general:

• Clipped planchets occur when the blanking punch overlaps the edge of the strip or a previous clip. Straight clips, curved clips, and ragged clips are the main varieties.
• Elliptical planchets like this one result from misfeeds and are far less common than clips, especially on gold denominations.
• Laminations and splits occur when impurities in the metal cause the surface to peel or flake after striking.
• Wrong planchet errors happen when a coin is struck on a blank intended for a different denomination or composition.

Why Gold Errors Are So Rare

One of the reasons this coin is so significant is that mint errors on American Eagle gold denominations are extraordinarily uncommon. The U.S. Mint applies particularly stringent quality control to its bullion programs. Gold planchets are more carefully inspected than base-metal coinage because of the intrinsic metal value and the premium associated with bullion products.

This means that when a gold error does slip through, it’s genuinely exceptional. The combination of a dramatic planchet error and a high grade (MS-69) makes this piece doubly remarkable. Most error coins trade at a discount because they’re struck in lower grades or because the errors are subtle. This coin defies both of those conventions. For anyone assessing collectibility, a mint-error Gold Eagle in near-pristine condition is about as good as it gets.

Identifying Die Cracks: The Subtle Errors That Add Value

While the elliptical planchet is the star of this particular show, I want to shift focus now to the types of errors that every collector should be trained to spot. Die cracks are among the most common—and most commonly overlooked—mint errors in circulation.

What Are Die Cracks and How Do They Form?

A die crack develops when the hardened steel die that strikes coins develops a fracture from repeated use. Each time the die strikes a planchet, enormous pressure is applied. Over tens of thousands of strikes, metal fatigue sets in, and tiny cracks begin to form on the die surface. When subsequent coins are struck, metal flows into these cracks, producing raised lines on the finished coin.

In my experience grading and examining error coins, here’s what I look for when identifying die cracks:

• Raised, irregular lines on the coin’s surface that don’t correspond to any design element
• Lines that extend from the rim inward, often following the path of least resistance through the die
• Progression over time — early die cracks are thin and faint; later ones are thicker and more pronounced
• Terminal die states where cracks become so extensive that large sections of the design may appear bloated or distorted

Die Cracks vs. Die Scratches: Know the Difference

One of the most common mistakes I see from newer collectors is confusing die cracks with die scratches. This distinction matters because it affects value significantly.

1. Die cracks are raised on the coin (the crack is recessed in the die, so metal fills it, creating a raised line). They have a rough, irregular texture.
2. Die scratches are incused (sunken) on the coin because they’re raised on the die itself. They tend to be smoother and more uniform.
3. Post-mint damage can mimic both, so always examine the area around the “crack” under magnification. True die cracks will show flow lines consistent with the striking process.

For the 2023 Gold Eagle series specifically, die cracks are worth documenting even on regular-issue coins because they can help establish die states and varieties that may become collectible in the future. A well-documented die progression series can itself become a sought-after variety set.

Double Dies: The Crown Jewels of Error Collecting

If there’s one type of error that consistently commands the highest premiums, it’s the doubled die. And understanding how to identify doubled dies is perhaps the most valuable skill an error hunter can develop.

What Causes a Doubled Die?

A doubled die occurs during the die-making process, before the die ever reaches the coining press. Modern U.S. coinage uses a process called hubbing, where a hub (bearing the incuse mirror image of the design) is pressed into a blank die to create the coinage die. If the hub and die are not perfectly aligned during one or more impressions, the resulting die will show doubling of design elements.

Every coin struck from that doubled die will show the same doubling, which is what makes doubled dies so collectible and diagnosable. Unlike a random die crack that changes over time, a doubled die is a fixed, repeatable variety—and that consistency is what gives it lasting numismatic value.

How to Identify Doubled Dies on Gold Eagles

When I’m examining a potential doubled die, here’s my systematic approach:

1. Start with the lettering. Doubling is most easily detected on flat, high-contrast surfaces like inscriptions. On the $5 Gold Eagle, examine “E PLURIBUS UNUM,” “IN GOD WE TRUST,” and the date closely.
2. Look for distinct separation. True doubled die doubling shows clear, measurable separation between the normal image and the doubled image. It’s not just blurriness—it’s a secondary image offset from the first.
3. Check the direction. Classify the doubling direction (Rotated, Offset, Distorted, etc.) using the standard classification system. This helps identify known varieties.
4. Compare with known examples. Resources like CONECA’s VAMWorld (for Morgan and Peace dollars) or doubleddie.com are invaluable. While Gold Eagle doubled dies are less cataloged, the same principles apply.
5. Use at least 5x magnification. Many doubled dies are subtle and require a loupe or microscope to confirm.

Notable Doubled Dies to Watch For

While doubled dies on Gold Eagles are not as extensively cataloged as on, say, Morgan dollars, they do exist and can be quite valuable. I always advise my fellow error hunters to examine every Gold Eagle they handle—you never know when you might discover a rare variety that hasn’t been documented yet. The thrill of that possibility is what keeps me coming back to every coin I encounter.

Mint Mark Variations: Small Letters, Big Value

Mint mark variations represent another category of error and variety that serious collectors need to understand. On modern U.S. coinage, mint marks are punched into the die by hand (or, in more recent years, applied during the hubbing process), and variations can occur.

Mint Mark Positions and Sizes

The $5 Gold Eagle has been produced at multiple mints over the years, including Philadelphia (no mint mark for most years), West Point (W), San Francisco (S), and others. Mint mark variations can include:

• Position variations — the mint mark may appear slightly higher, lower, left, or right of its expected position
• Size variations — different punches may produce slightly larger or smaller letters
• Style variations — the font or shape of the letter may differ between dies
• Repunched mint marks (RPMs) — when the mint mark is punched in twice, creating a visible doubling or overlap

Why Mint Mark Errors Matter on Gold

On gold coins, mint mark errors are particularly significant because of the already-limited mintage numbers. A mint mark error on a $5 Gold Eagle from a low-mintage year can elevate a coin from a bullion-level piece to a genuine rarity. I’ve personally seen mint mark errors on gold coins command premiums of 500% to 1000% over their normal-issue counterparts.

Always check the mint mark under magnification. I’ve found that even slight doubling or repunching can be easily missed with the naked eye but becomes obvious at 10x. It’s one of those small habits that can pay off enormously over time.

Specific Errors to Look For: A Collector’s Checklist

Drawing from my experience as an error coin hunter, here is my comprehensive checklist of errors to examine on every Gold Eagle and modern U.S. gold coin. I keep a printed copy in my examination kit—you’d be surprised how easy it is to forget a category when you’re focused on one particular feature.

Planchet Errors

• Elliptical or oval planchets (like our featured coin)
• Clipped planchets (straight, curved, or ragged)
• Thick or thin planchets (indicating improper rolling)
• Lamination errors (surface peeling or splitting)
• Wrong planchet (e.g., a Gold Eagle struck on a silver Eagle planchet)

Die Errors

• Doubled dies (hub doubling on obverse or reverse)
• Die cracks (raised lines on the coin)
• Die breaks (cuds—raised, unstruck areas at the rim)
• Die chips (small raised dots or irregular bumps)
• Die clashes (ghost images of the opposite side’s design)
• Mint mark errors (RPMs, misplaced mint marks, missing mint marks)

Strike Errors

• Broadstruck coins (struck without the collar, resulting in a wider, thinner coin)
• Off-center strikes (design not centered on the planchet)
• Multiple strikes (the coin was struck more than once)
• Die cap errors (the coin wraps around the die from repeated strikes)
• Broken letter errors from filled die debris (sometimes called “fill” errors)

The Market for Gold Eagle Errors: Lessons from the Auction Block

One of the most fascinating aspects of this particular coin is what it tells us about the market for gold errors. The forum discussion reveals a coin that sold at GreatCollections for approximately $4,888 (without buyer’s premium), with a last-second bid of $3,535 failing to take it. The original buyer then listed it on eBay at $12,500.

This price trajectory tells us several important things about the error coin market:

• Liquidity is a real concern. As one forum member noted, this collector was worried about getting “buried” in the coin because the pool of buyers for Gold Eagle errors is extremely small. When you’re dealing with a unique or nearly unique error, finding the next buyer can be challenging. The numismatic value may be high, but realizing that value requires finding the right buyer at the right time.
• Valuation is subjective. Opinions in the forum ranged from $2,000–$2,500 to $10,000 to $12,500. Without comparable sales, pricing a unique error is more art than science. I generally advise collectors to pay what they’re comfortable holding for, because the exit strategy may take time.
• Pedigree matters. The NGC MS-69 grade, the Miles Standish signed label, and the Black Retro holder all add collectibility beyond the error itself. In the error market, third-party certification from NGC or PCGS is essentially mandatory for any coin expected to command significant premiums. Provenance isn’t just a buzzword—it’s a tangible factor in resale value.
• The “only known” factor is powerful. Being the sole example of a particular error type creates a floor of value that wouldn’t exist for a more common error. Collectors who pursue “only known” pieces are often willing to pay substantial premiums for that distinction.

Actionable Advice for Buyers and Sellers

Based on my observations of this coin’s journey through the market, here are my recommendations:

1. Always get professional certification. An authenticated, graded error coin will always sell for more than an ungraded one. NGC and PCGS both have error designations (NGC uses “Mint Error” designations; PCGS uses similar terminology). A coin in mint condition with proper certification is a completely different proposition from an unauthenticated piece.
2. Document everything. Photographs, weight measurements, and detailed descriptions of the error are essential. Weigh your coin on a precise scale—the difference between 3.000 grams and 3.393 grams is what makes this coin extraordinary. That single measurement is the backbone of the entire authentication argument.
3. Be patient with unique pieces. If you own a one-of-a-kind error, don’t rush to sell. The right buyer may take months or even years to find, but waiting for that buyer can mean the difference between a modest return and a windfall.
4. Network with other error collectors. Organizations like CONECA (Combined Organizations of Numismatic Error Collectors of America) are invaluable resources for connecting with specialists who appreciate what you have. I’ve made some of my best contacts—and found some of my best coins—through these communities.

Authentication Concerns: “True Error or Modern Shenanigans?”

One forum member raised an important question: “What’s more likely, a true error or modern shenanigans?” This is a legitimate concern in the error coin market, and it’s one I take very seriously.

The authentication of this coin rests on several factors:

• NGC certification. Numismatic Guaranty Company examined and certified this coin as a genuine mint error in MS-69 condition. While no grading service is infallible, NGC has extensive experience with mint errors and their authentication processes are rigorous.
• Weight and dimensions. The coin weighs 3 grams versus the standard 3.393 grams. This is consistent with missing metal from the elliptical planchet, not with post-mint alteration, which would typically remove surface metal unevenly. The precision of the weight deficit actually supports rather than undermines authenticity.
• The nature of the error. An elliptical planchet is extremely difficult to fake convincingly. The missing design elements, the distorted strike, and the overall appearance are consistent with a genuine mint error. Post-mint alteration would show different characteristics under magnification—different surface textures, inconsistent patina, tooling marks.
• The Miles Standish signature. Miles Standish is a well-known figure in the numismatic community, and his signed label adds a layer of provenance that would be risky to fabricate. That kind of named provenance is hard to fake and easy to verify.

That said, I always recommend that collectors develop their own eye for authentication. Learn what genuine errors look like, study certified examples, and never be afraid to seek a second opinion on a significant purchase. The more coins you examine in mint condition, the better your instincts become for spotting something that doesn’t belong.

The Human Element: Why We Chase Errors

Beyond the technical details and market analysis, I think it’s worth reflecting on why coins like this captivate us. One forum member joked, “This coin was probably struck on a Friday at 4:59 PM,” and while that’s said in jest, there’s a kernel of truth there. Every error coin represents a moment when the incredibly precise machinery of the U.S. Mint failed, and a human being somewhere in the process didn’t catch it.

That’s what makes error collecting so compelling to me, year after year. Each error coin is a tiny story of imperfection in a system designed for perfection. The elliptical planchet Gold Eagle isn’t just a valuable coin—it’s a piece of minting history, a physical record of a process that went wrong in a way that may never happen again. The eye appeal of such a piece goes beyond luster or strike; it carries the weight of a story that no regular-issue coin can match.

As one collector perfectly put it: “Considering what CoinWeek wrote, it’d be extremely difficult to make such a type set.” And that’s exactly the point. Some errors are so rare that a complete set of them is essentially impossible to assemble. That impossibility is what drives us to keep searching, keep examining, and keep hoping that the next coin we pick up might be the one that changes everything.

Conclusion: The Enduring Importance of Error Hunting

The 2023 $5 Gold Eagle struck on an elliptical planchet stands as a remarkable testament to the surprises that still emerge from the U.S. Mint. As the only known U.S. gold coin of its kind, it occupies a unique position in numismatic history—one that may never be duplicated. Its journey from the mint floor to the auction block to the eBay listing at $12,500 tells us as much about the collector market as it does about the coin itself.

For error coin hunters, this piece serves as both inspiration and instruction. It reminds us that dramatic errors can still slip through even the most rigorous quality control systems, especially on precious metal coinage where we might expect perfection. And it instructs us in the importance of understanding planchet errors, die cracks, doubled dies, and mint mark variations—the bread and butter of the error collecting hobby.

In my years of hunting varieties and errors, I’ve learned that the most important tool isn’t a loupe or a scale—it’s patience. The tiny details that turn a common coin into a rarity worth thousands are there for anyone to find. You just need to know what to look for, where to look, and how to verify what you’ve found. Whether you’re examining your pocket change or bidding on a unique gold error at auction, the principles remain the same: study the standards, recognize the deviations, and never stop looking.

The next time you hold a coin in your hand, take an extra moment to really look at it. Examine the edges, check the mint mark, weigh it if you can. You might just be holding the next great error that the numismatic world has never seen before. And if you are, I hope you’ll hold onto it—and tell the rest of us about it.

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