How to Maximize Profits Selling a Major SBA Struck‑Through Error Found in Roll Searching at Auction

There is a massive difference between selling on eBay and consigning to a major auction house. Let me show you how I position this item for the highest hammer price.

As a longtime auction house director who has overseen thousands of numismatic consignments, I can tell you that the journey from a roll-search find to a record-breaking hammer price is paved with deliberate choices. The Susan B. Anthony (SBA) dollar struck-through error that surfaced in the forum thread is a perfect case study.

It is visually striking, historically interesting, and—when presented correctly—can attract serious collector bids that far exceed what you’d see on an online marketplace. Below I break down the five-part strategy I recommend: understanding the error, preparing the lot, mastering fee structures, timing the sale, and crafting a catalogue that sings.

Understanding the SBA Struck-Through Error

Before you even think about photography or fees, you must know exactly what you have. The SBA dollar, minted from 1979–1981 and again in 1999, is a copper-nickel clad coin weighing 8.1 grams with a diameter of 26.5 mm. A struck-through error occurs when a foreign object—often a piece of planchet, scrap metal, or even a detached clad layer—lands between the dies and the blank planchet during the strike.

The result is a partial or complete impression of that object on the coin’s surface. In the images shared by the collector, the struck-through area appears as a broad, irregular indentation that follows the contour of the coin’s border but lacks the crisp, circular edge typical of a detached clad layer.

Experts in the thread speculated that the interfering object was thicker than a clad layer (≈0.5 mm) yet thinner than a full planchet (≈1.55 mm), possibly a fragment of a previously struck SBA planchet or a piece of scrap steel from the minting process. Key diagnostic markers for authenticity include:

• Metal flow lines that are disrupted only within the struck-through zone, showing a clear boundary where the foreign material impeded the die.
• Absence of tool marks or polishing consistent with a post-mint alteration (no Dremel scratches, no uneven polishing).
• Weight and dimensions that remain within tolerance for a normal SBA dollar, indicating the object did not add significant mass.
• Consistent toning across the coin, with the struck-through area showing slightly different oxidation patterns due to the altered surface.

If you can confirm these points—ideally through a third-party grading service such as PCGS or NGC—you lay the foundation for a credible, high-value lot with real numismatic value.

Preparing the Lot: Grading, Conservation, and Presentation

Once authenticity is established, the next step is to secure an accurate grade. In my experience, a struck-through SBA dollar in mint condition can command a premium of 30–50% over a regular strike of the same year and mint mark, provided the error is dramatic and offers strong eye appeal.

I recommend the following preparation workflow:

1. Submit the coin to a reputable grading tier (e.g., PCGS TrueView or NGC Grading) with a request for a detailed error designation.
2. Request a high-resolution holder insert that showcases the struck-through area without obscuring it.
3. Consider light conservation only if there are active corrosion spots; otherwise, leave the coin as-found to preserve its original patina.
4. Obtain a high-definition macro photograph (see the photography section below) and a short video clip that rotates the coin 360°, highlighting the error’s depth and luster.

When the graded slab arrives, verify that the label includes the exact error description (e.g., “Struck-Through – Foreign Object, Approx. 1.2 mm”) and the grade (e.g., MS 64). This specificity becomes a powerful selling point in the catalogue and boosts long-term collectibility.

Professional Photography: Making the Error Unmissable

In the auction world, the image is often the first—and sometimes only—point of contact a bidder has with your lot. A poorly lit, flat photo can hide the very feature that gives the coin its numismatic value. I have seen lots lose 15–20% of their potential hammer price simply because the photography failed to convey depth.

Here is the protocol I enforce for all error coins:

• Lighting: Use a diffuse, 45-degree angled light source (softbox or light tent) to create gentle shadows that accentuate relief. Avoid direct on-axis flash, which flattens the surface.
• Background: Neutral gray or black velvet eliminates distractions and allows the coin’s silver-toned surfaces to pop.
• Focus: Shoot at a macro ratio of 1:1 or greater, focusing on the struck-through zone. Take multiple focal planes and stack them in post-processing to ensure the entire error is razor-sharp.
• Scale: Include a subtle ruler or a known-size reference (e.g., a 1 mm dot) in one corner of the frame to give bidders a sense of depth.
• Post-Processing: Adjust only exposure, contrast, and white balance. Never clone, heal, or alter the struck-through area; authenticity is paramount.

When the final image set is ready, I also produce a short 10-second video loop that rotates the coin slowly. This dynamic view helps bidders appreciate the three-dimensional nature of the error, something a static photo can’t fully convey.

Catalogue Descriptions: Turning Facts into a Narrative

A catalogue entry is more than a list of attributes; it is a story that guides the bidder’s imagination. As director, I train my writers to answer three questions: What is it? Why does it matter? What should the bidder feel?

For our SBA struck-through lot, a strong description might read:

1979-P Susan B. Anthony Dollar, MS 64 (PCGS). Struck-Through Error – Foreign Object, Approx. 1.2 mm thick, producing a broad, irregular indentation that follows the coin’s rim. The error displays clear metal flow disruption, with no evidence of post-mint alteration. This dramatic struck-through is among the most visually compelling examples seen in recent years, offering a tangible glimpse into the mint’s occasional mishaps with planchet handling. A superb addition to any error-coin collection or a standout piece for a thematic SBA set.

Notice how the description:

• Identifies the coin’s date, mint mark, grade, and holder.
• Details the error’s physical characteristics and confirms authenticity.
• Places the error in a broader historical context (mint process vulnerability).
• Appeals to both specialist error collectors and general SBA enthusiasts.

I also recommend adding a bullet-point “Key Features” block for quick scanning:

• Date: 1979-P
• Grade: MS 64 (PCGS)
• Error Type: Struck-Through – Foreign Object (approx. 1.2 mm)
• Weight: 8.1 g (within tolerance)
• Diameter: 26.5 mm
• Holder: PCGS Secure Slot, tamper-evident

This format satisfies both the casual browser and the serious researcher, increasing the likelihood of competitive bidding and reinforcing the lot’s provenance.

Understanding the Fee Structure: Buyer’s Premiums and Seller’s Fees

Even the most spectacular lot can lose its shine if the consignor misunderstands the financial mechanics of an auction. Transparency about fees builds trust and helps you set realistic reserve expectations.

In my auction house, the standard fee schedule for numismatic consignments is:

• Buyer’s Premium: 20% of the hammer price (sliding scale: 18% for amounts over $100,000, 22% for under $5,000). This is added to the hammer price and paid by the buyer.
• Seller’s Commission: 10% of the hammer price (negotiable down to 8% for high-value lots or multi-consignment agreements).
• Photography and Cataloguing Fee: Flat $150 per lot (covers professional imaging, video, and description writing).
• Insurance and Handling: 0.5% of the declared value, minimum $25.
• Optional Reserve Fee: $75 if you set a reserve below the estimated value (waived if no reserve is used).

Let’s work through a hypothetical scenario. Suppose the hammer price for our SBA struck-through lot settles at $4,200.

• Buyer’s Premium (20%): $840 → total buyer pays $5,040.
• Seller’s Commission (10%): $420.
• Photography/Cataloguing: $150.
• Insurance/Handling (0.5% of $4,200): $21.
• Total seller net: $4,200 – $420 – $150 – $21 = $3,609.

If you had sold the same coin on eBay with a 12% final value fee and $3 shipping, you’d net roughly $3,600 after fees—but you would have lost the premium buyer confidence, the professional presentation, and the potential for competitive bidding that often pushes hammer prices well above eBay’s static listings.

Actionable takeaway: Always request a detailed fee estimate before consigning. Knowing the exact net you’ll receive lets you set an appropriate reserve (if any) and avoid surprises at settlement.

Auction Timing: Riding the Collector Cycle

Timing can be as crucial as the coin itself. The numismatic market ebbs and flows with collecting seasons, major shows, and even macro-economic trends. I have observed that error-coin prices tend to peak in the windows surrounding the American Numismatic Association (ANA) Summer Seminar and the fall FUN (Florida United Numismatists) show, when specialist collectors are actively buying and attending auctions.

For an SBA struck-through error, consider the following timing factors:

• Collector Demand: SBA dollars have a dedicated niche; rare variety error pieces see spikes when new reference books or auction catalogues highlight them.
• Market Liquidity: Auctions held in Q2 (April–June) and Q4 (October–December) generally attract higher bidder counts due to tax-refund season and year-end spending.
• Avoiding Saturation: If multiple major error lots are scheduled in the same session, consider staggering your consignment to avoid direct competition.
• Economic Indicators: In periods of strong disposable income, collectors are more willing to pay premiums for rarities; during downturns, focus on lots with strong eye appeal and clear grading.

Based on these patterns, I recommend targeting an auction scheduled for late May or early November. Submit your consignment at least six weeks ahead to allow ample time for grading, photography, and catalogue inclusion.

The Auction Day Experience: From Lot Opening to Hammer Fall

On the day of the sale, the lot’s presentation continues to influence bidding dynamics. I always ensure that the lot appears early in the session if it is a high-interest error piece, as early lots benefit from fresh bidder attention and set the tone for the sale.

During the live auction, the auctioneer will:

1. Read the catalogue description verbatim, emphasizing the struck-through nature and grade.
2. Display the high-resolution image on the screen, zooming into the error area.
3. Invite floor and online bidders to place bids, often starting slightly below the estimate to encourage participation.
4. Monitor the bidding increments, adjusting as needed to keep momentum.

For online-only auctions, the same principles apply: the lot’s thumbnail must be striking, the full-screen image must load quickly, and the bidding interface should allow easy zoom.

After the hammer falls, I promptly send the seller a detailed settlement sheet breaking down hammer price, fees, and net proceeds, along with a congratulatory note and an invitation to consign future material with solid provenance.

Post-Auction Considerations: Building on the Sale for Future Consignments

A successful auction does more than put cash in your pocket; it builds reputation. When a lot like our SBA struck-through performs well, I use the result in three ways:

1. Marketing Material: Include the realized price and hammer photo in future consignment packets to demonstrate expertise.
2. Collector Outreach: Notify interested parties who bid but did not win; they often become repeat clients for similar material.
3. Grading Feedback: Share the grading report with the third-party service to help them refine error-type descriptors, benefiting the whole community.

Additionally, consider reinvesting a portion of the proceeds into acquiring more roll-search material or higher-grade examples to consign in subsequent seasons. The cycle of buying, presenting, and selling creates a virtuous loop that enhances both your collection’s depth and your standing in the auction community.

Conclusion: Why This SBA Struck-Through Deserves Auction Spotlight

The Susan B. Anthony dollar struck-through error uncovered in the forum discussion is more than a curiosity; it is a tangible artifact of the Mint’s occasional lapses in planchet control, offering collectors a rare window into the production process of a modern circulating coin. Its broad, irregular indentation, coupled with a solid MS 64 grade and pleasing luster, makes it a standout piece for both error-coin specialists and enthusiasts of the SBA series.

By following the auction-house-centric roadmap outlined above—rigorous authentication, professional grading, meticulous photography, compelling catalogue copy, transparent fee management, strategic timing, and confident presentation—you position this lot to achieve a hammer price that reflects its true numismatic value. In my years overseeing auctions, I have seen countless roll-search finds transform from casual hobby treasures into headline-grabbing sale highlights when handled with the expertise and care that only a dedicated auction house can provide.

If you hold a similar SBA struck-through or any other compelling error with great eye appeal, I encourage you to reach out. Let’s turn your discovery into a collector’s triumph.

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