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Rim Errors, Differences And Examples Please

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 Posted 06/06/2023  7:43 pm Show Profile   Bookmark this topic Add simplycoins101 to your friends list Get a Link to this Message
I have been trying to figure out what the difference between rim errors are. What is the difference between a "railroad" rim and a finned rim or double rim or false rim. It gets somewhat confusing. A tilted collar or partial collar is easily determined which the others aren't. Trying to find the proper way to determine true errors from those 'made up' ones that keep floating around.

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 Posted 06/06/2023  8:28 pm  Show Profile   Bookmark this reply Add Brandmeister to your friends list Get a Link to this Reply is certainly a great resource for identifying errors. The pictures are super helpful.

We just went through a lengthy discussion about nickel rims.

Railroad rim is a collar clash for a reeded coin. The die strikes the reeded collar, which cuts grooves into the die edge. Then that die strikes subsequent coin rims with a stepped pattern that resembles railroad tracks on a map. Someone just posted a dime with a collar clash recently.

Finning is caused by metal getting forced between the collar and the die. It makes a thin metal edge that sticks out from the coin edge.

A weak strike can make the appearance of a secondary rim on nickels and pennies. The die doesn't force the metal all the way to the planchet edge and force it into a squared off shape.
Edited by Brandmeister
06/06/2023 8:31 pm
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