What Causes Some Coins To Have A Double Rim?

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Author	Replies: 6 / Views: 5,866
My2cent Valued Member United States 484 Posts	Posted 07/18/2021 12:25 am I understand that being off center could cause something like that but what if any are the other possible reasons for doubled rim coins I come across sometimes? This is just an example of what I am asking about. This one is probably just off center but I'm not sure about other possibilities. That's why I ask. Report this Post to the Staff

Greasy Fingers Pillar of the Community United States 7015 Posts	Posted 07/18/2021 01:51 am Tilted die is my understanding Edited by Greasy Fingers 07/18/2021 01:51 am Report this Post to the Staff
spru Bedrock of the Community United States 12477 Posts	Posted 07/18/2021 03:14 am The pictured coin looks to have a slightly misaligned obverse die. It's not considered an "off center" error because it only affects one side. It is known as MAD, or MisAligned Die. Other reasons for a doubled appearance on the rim include a tilted die, as mentioned, and abnormally high striking pressure. I'm sure there are other possibilities. I hope that helps. In Memory of Crazyb0 12-26-1951 to 7-27-2020 In Memory of Tootallious 3-31-1964 to 4-15-2020 In Memory of T-BOP 10-12-1949 to 1-19-2024 Edited by spru 07/18/2021 03:17 am Report this Post to the Staff
My2cent Valued Member United States 484 Posts	Posted 07/18/2021 03:40 am That does indeed help me. I have noticed sometimes a coin with a strong strike also exhibits the double rim. I will be keeping my eyes open for the tilted die type. I always see a thinner edge on one side but I'm not sure if I have seen this detail. I wonder if there's any other cause for this? Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21786 Posts	Posted 07/18/2021 04:52 am Very slightly off center strike, but still completely within the collar. This sort of error is so common, that it can hardly even be conceived as an 'error'. - (no extra value). A lip of metal is squeezed up between the edge of the die and the collar on part of the circumference only. With a perfectly centered strike, this phenomenon never happens. Occasionally happens with all World coinage, not just U.S. coins. Report this Post to the Staff
nss-52 Moderator United States 54280 Posts	Posted 07/18/2021 10:36 am This is caused by a mis-aligned die, and is not an off-center strike. Show your financial support of the Coin Community Family (click here) See my topic on Mexican Numismatic Medals (click here) Report this Post to the Staff
My2cent Valued Member United States 484 Posts	Posted 07/18/2021 11:18 am Okay, now I have a better understanding of that subject. Thanks everyone. Report this Post to the Staff
	Replies: 6 / Views: 5,866

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