Expert: PAPAJACK - 6/25/2007

Question
Papajack,
I recently got a nickel back in my change that seems to have had a problem in the stamping press. It is a 2007 Liberty Nickel and the edges are, for a lack of better words, rounded. It has made the nickel smaller than normal, all the metal is still there, just rolled up around the edges. I would have said it was someone who was bored and did it, but it is perfectly round and the compression around the edges are symmetrical. I can e-mail you a picture if that will help explain it better.  
Thanks for your time and your service.
Trent

Answer
Hello Trent,                  

The process at the mint is "Upset Milling" it rolls the coin blank with rough edges to the diameter needed for the coin to fit in the press. It also imparts a smooth, flat and shiny edge to the coin. And during the process raises the rim on the heads and tails sides.
This protects the image stamped on the coin making it last longer.  If this does not sound like your coin please let me know.
Without seeing an enlarged cross section on yours I would not say for sure but it may have been a slightly oversize coin blank that when put into the up-set milling machine rolled the excess material over the expected rim of the coin. A normal photograph would not show this error.  

A coin dealer in your area would be able to tell you more. Since this is not an error in the striking of the coin imparted by the die it may have no value added to the coin.
If you are looking for a dealer in your area feel free write me back for help.

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Thank You and Good Luck

PapaJack