1985-D Roosevelt Dime Unusual - Coin Community Forum

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Author	Replies: 2 / Views: 1,108
CoinMasters Pillar of the Community United States 5964 Posts	Posted 03/19/2016 6:44 pm I posted one similar to this one a while back. I remember Mike told us it was a product of Inadequate Upset and Excessive Obverse Die Convexity. Now I'm a simple man, so I realized it must have had too much curvature on the obverse die and not enough upset. I didn't know what upset was, but as I can only absorb so much at a time, I was satisfied. After finding this dime, I wish I'd have asked about it. In other words, I don't have a clue what this one is. Any help would be appreciated. Report this Post to the Staff

ErrorCoins222 Pillar of the Community United States 1699 Posts	Posted 03/19/2016 8:29 pm After a blank is punched out of the sheet, it is sent through an upsetting machine. Essentially what the upsetting machine does is force the blank into a smaller and smaller diameter, which builds up the thickness of the perimeter of the planchet, giving it a thicker rim - called a "proto-rim". This rim helps in many ways, one of which is allowing for a better strike of the peripheral design. If the upsetting machine isn't set correctly, the proto-rim may not be large enough for the coin to get a strong peripheral design during striking - this would be inadequate upset. Edited by ErrorCoins222 03/19/2016 8:30 pm Report this Post to the Staff
CoinMasters Pillar of the Community United States 5964 Posts	Posted 03/19/2016 8:55 pm I see. Thank you for telling me that. Now that I know that, this one might be a candidate for Inadequate Upset. There are a lot of perimeter devices that appear to me to be weakly struck. Just guessing Report this Post to the Staff
	Replies: 2 / Views: 1,108

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