Planchet Unevenness? - Coin Community Forum

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Author	Replies: 7 / Views: 1,267
coinguybrian Rest in Peace United States 5375 Posts	Posted 07/10/2009 01:47 am Is there something where sometimes, planchets are a little uneven to begin with? Because I just got a Half Dime that is really nice...it sits fine on a flat surface, no dings, etc....but the obverse appears to bulge just the very very slightest amount (barely noticeable but if you look for it, it seems to actually be there). Has anyone gotten this before, and what are your thoughts? Report this Post to the Staff

TreasHunt Pillar of the Community United States 2540 Posts	Posted 07/10/2009 07:18 am theoretically, this should not happen. Report this Post to the Staff
coinguybrian Rest in Peace United States 5375 Posts	Posted 07/10/2009 10:54 am I mean, it was just kind of weird. I looked everywhere for defects and just couldn't find anything... Report this Post to the Staff
Napoleon31ft Pillar of the Community United States 528 Posts	Posted 07/10/2009 7:44 pm If you can get a picture that would be nice. Report this Post to the Staff
coinguybrian Rest in Peace United States 5375 Posts	Posted 07/10/2009 8:51 pm It is SO subtle that I guarantee that you will not see it in a picture. I did not notice until basically scrutinizing the coin, and even afterwards I really have to look for it. It just looks like a normal coin I guess. I'll take a picture anyway though. Report this Post to the Staff
Buzzard Valued Member United States 156 Posts	Posted 07/11/2009 1:11 pm It sounds like a die bulge to me. I have a Mexican coin where the die bulge is obvious in hand, but doesn't show up in photos. It occurs when the die has deformed from use. Report this Post to the Staff
coinguybrian Rest in Peace United States 5375 Posts	Posted 07/11/2009 6:31 pm Is this really common? Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 07/13/2009 2:17 pm What he is calling a die bulge is actually die sinking for improper or incomplete hardening. During use the constand pounding on the die face causes the softer metal below the die face to deform and become compressed allowing the face of the die to sink. The metal of the planchet fills this depression on the die face resulting in a buldge on the face of the coin. Some varieties of Half Cent and early large cent are well known for this with the buldge completely or nearly completely wiping out the design. This weakness becomes much less common as the mint improved the hardening process. Report this Post to the Staff
	Replies: 7 / Views: 1,267

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