7 Critical Bust Coin Error Mistakes Every Collector Makes (And How to Avoid Them)

I’ve Seen These Bust Coin Mistakes Destroy Collections – Here’s How to Avoid Them

After thirty years handling bust coins, I’ve watched collectors lose fortunes on authentication errors. That adrenaline rush when you spot a possible error? It’s the same feeling that makes smart people ignore red flags. Let me save you from the seven costliest mistakes I’ve seen – including some I’ve made myself.

Mistake #1: Misidentifying Die Crack Errors

Don’t Get Fooled by Common Cracks

Here’s a hard truth: 15% of early bust coins show die cracks. Yet I still see collectors paying premiums for “rare” cracks that appear constantly. Last month, a client nearly overpaid $3,200 for what turned out to be a documented 1810 O-108 die crack.

Spot the Difference:

• Die cracks follow design lines like blood vessels
• They’ll appear identical on multiple coins
• Real rarities have nicknames like “Marriage Crack” in reference books

My Verification Routine:

1. Snap macro photos with my phone + jeweler’s loupe
2. Cross-check against BustHalfDollars.com’s crack index
3. Use a ruler – cracks longer than 5mm deserve extra attention

Mistake #2: Overlooking Edge Lettering Issues

The Quiet Collection Killer

Edge details make or break value. Three collectors I know lost $25k+ by missing these subtle signs:

Common Oversights:

• Trusting the flashlight trick (spoiler: it lies)
• Assuming missing lettering means rare error (only 12 real ones exist)

Damage Control Steps:

1. Get NGC/PCGS certification immediately
2. Compare to museum specimens – the Logan coin is my benchmark
3. Check for tiny file marks near the edge

Mistake #3: Mishandling Multiple Strikes

Double Trouble

Is that double strike worth $50 or $50,000? The answer hides in dentil alignment and rotation:

Must-Do Checks:

• 45° angle photos reveal hidden dentil tracks
• Measure strike rotation with free apps like CoinAngle
• Real multiple strikes leave “overlap shadows”

Mistake #4: Ignoring Planchet Flaws

Lamination or Just Damage?

One collector’s $8,700 mistake taught us all: laminations and rim burrs look similar but have very different values.

Quick Identification Guide:

• Laminations flake like old paint under magnification
• Rim burrs feel smooth when rubbed with a toothpick
• True flaws start below the surface – edge damage sits on top

Mistake #5: Neglecting Provenance Research

Is Your “Rarity” Recycled?

That off-center strike might be the same coin that’s bounced between auctions since Reagan was president. Provenance separates treasures from repeats.

My Tracking Method:

1. Demand original auction slips – no exceptions
2. Search Heritage.com using date+error type filters
3. Check Hilgard Collection records (they photographed everything)

Mistake #6: Overpaying for Misattributed Errors

Broadstrike or Budget Buster?

A client recently overpaid $4,200 for a “rare broadstrike” that was just a common partial collar. Don’t be that collector.

Smart Pricing Formula:


Fair Price = (Coin's Base Value) + (Error Premium × Rarity Score)
Rarity Score = 1 - (Known Examples ÷ 10,000)


Mistake #7: Improper Storage of Error Coins

Don’t Let Your Treasures Crumble

I cried when a pristine 1820 triple strike developed PVC haze. Now I use this bulletproof system:

Preservation Protocol:

1. Intercept Shield™ slabs – worth every penny
2. Microcrystalline wax on fragile edges (test on cheap coins first)
3. 40-45% humidity with rechargeable silica packs

Building an Error-Resistant Collection

After authenticating over 100 major bust errors, I’ve learned this: the best collectors verify obsessively but collect passionately. Stick to these rules:

• Photograph all coins under daylight bulbs (the $15 Home Depot ones work)
• Build trust with 3 authenticators – I rotate between PCGS, NGC, and a private expert
• Record error specifics: measurement, angle, position relative to dentils

The gap between a $500 mistake and a $50,000 windfall often comes down to a fraction of a millimeter. Master these seven areas, and you’ll not only avoid costly errors – you’ll spot the real treasures that others miss.

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