Penny Rim Errors: Pictures, Identification and Damage Checks

How do I tell a penny rim error from damage?

Which real coin details should I compare?

How do the issues and values compare?

What is the difference between the rim and the edge?

The rim is the raised border around each face; the edge is the narrow side between the faces. They are related but not interchangeable. A side photograph can reveal a stepped edge that a straight-on image hides, while a high rim visible from the front may result from displaced metal after striking. Start with all three views instead of assigning a nickname from one cropped photograph.

The raised border protects the design and helps coins stack. During manufacture the planchet is prepared and then struck between dies, normally with a collar controlling its diameter. Departures at different stages create different features. That production sequence is why an oversized full design, a thin upright fin and a smashed edge should not be grouped under one price.

What does a finned-rim penny look like?

A fin is a thin flange of metal at the rim-edge junction. It is different from the ordinary rounded protective border. Die alignment and striking pressure can contribute to finning, but an unusually high rim needs examination before its cause is assigned. A fin can also be bent or damaged after manufacture, so the condition of the feature matters.

The source photograph includes a holder reading 1997 Mint Error, PCGS MS64RD, Finned Rim, Misaligned Die. It is a visual reference for those described features. This guide has not independently confirmed the certificate, and it assigns neither a sale price nor a universal grade to similar-looking cents. The pictured penny error and variety list supplies other established comparison categories.

How is a broadstrike different from an off-center strike?

NGC describes a broadstrike as a coin struck without proper collar restraint while the complete design remains on both faces. Metal can spread beyond the normal diameter. If part of the design is missing because the strike is displaced, the off-center category becomes relevant. An uneven border alone is insufficient: establish what happened to the complete design on each side.

A partial collar strike involves incomplete collar engagement and may produce a stepped edge. Record the coin’s diameter at several angles and its weight with a suitable scale. Measurements help screen a candidate but do not rule out deliberate alteration. Do not file or straighten the edge to make a cleaner photograph.

Why do rolled or dryer-like rims look convincing?

Repeated mechanical contact can move metal inward, thicken the border and wear peripheral letters. Such damage can create a striking appearance without occurring at the Mint. The photographed damaged cent is useful because it shows a rolled border and heavy surface wear together. Calling a coin a “dryer penny” describes a commonly discussed damage pattern; it does not prove the exact machine or history of this specimen.

Vise pressure, hammer blows, cutting, grinding and corrosion can also alter an edge. Look for displaced lettering, flattening, parallel tool marks and disturbed surfaces. Compare the whole object before deciding whether the shape fits a production mechanism. The surface-alteration guide helps keep damage separate from preservation.

Are rim cuds the same as small die chips?

A cud is a raised area associated with a die break reaching the die’s edge; the affected area can replace intended detail on the coin. A small chip within the design is a different feature. Neither should be identified from color alone. Corrosion blisters and attached material can imitate raised metal, while a scratch is normally an incuse interruption rather than a raised die-break feature.

How much is a penny rim error worth?

There is no trustworthy single range for all thick-rim pennies. Establish the category, date, severity, preservation and authenticity first, then compare completed sales for closely matching examples. An asking price for a mislabeled “rare rim” is not evidence. Minor features may not justify certification costs; spectacular authenticated errors are a different market.

This article deliberately does not attach a price to the finned-rim reference or the damaged cent. For a documented but different striking category, the 1975 penny error guide pairs an actual double-struck coin with dated auction evidence. A double-strike sale does not value a rolled edge. Use the appraisal guide when physical examination is needed.

How can I check my coin in three steps?

1. 01Photograph the entire obverse, reverse and edge in neutral light. Record the date, mint, weight and diameter without modifying the rim.
2. 02Ask which production mechanism fits all views. Compare finning, full-design broadstrike, partial collar and a rim-connected cud against displaced or worn metal.
3. 03Keep uncertain coins uncleaned. Seek an attribution before using an error price, and compare similar completed sales rather than dramatic asking prices.

What should I remember?

What else do collectors ask?

Which references support this guide?