Image credits

Sources for coin photographs and app screenshots are listed below. NGC Coin Explorer supplies the issue-identification photographs. Retrieved September 15, 2026. The pictured coins illustrate their issues; they are not presented as the auction lots discussed in the article.

• Article list and social cover: user-supplied reverse photograph showing Monticello and the S mint mark.
• Philadelphia obverse and reverse: NGC 1941 5C MS, source image identifiers 2667036-019o and 2667036-019rr.
• Denver reverse: NGC 1941 D 5C MS, source image identifier 2667036-020rr.
• San Francisco reverse: NGC 1941 S 5C MS, source image identifier 5c-1941srr.
• Full Steps section, examples 1 and 2: photographs supplied by the user. Cropped to show only the right-hand reverse; no coin features retouched.
• Heritcoin identification and details screenshots: supplied by the user as IMG_1047.PNG and IMG_1048.PNG; content unchanged.
• Variety close-ups: 1941-D RPM-003, Large S mint-mark style (RPM-001 reference) and 1941-S RPM-002, James Wiles / Variety Vista. Inverted S photo: BigDowgie, Collectors Universe reference discussion; existing Photobucket mark retained. The Large S illustration is taken from a repunched Large S specimen to show the mint-mark style; it is not a claim that every Large S has the same repunching.

Photographs converted to WebP, with original dimensions retained. Coin details have not been retouched. Red locator boxes in the article and zoom preview are HTML/CSS overlays that scale with the image; the stored WebP photographs retain their original pixels. Copyright remains with the rights holder; no Creative Commons or public-domain license is asserted.

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