1935 OMM - Coin Community Forum

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Author	Replies: 4 / Views: 1,093
Xxavier Valued Member United States 60 Posts	Posted 10/24/2011 4:06 pm Report this Post to the Staff

coop Bedrock of the Community United States 62064 Posts	Posted 10/24/2011 5:36 pm Looks normal from what I can see. Report this Post to the Staff
Xxavier Valued Member United States 60 Posts	Posted 10/25/2011 6:55 pm coop can you please explain a little the difference between rpm and omm? more specifically how to tell the diference I've read about it but some how I understand you better Report this Post to the Staff
biokemist6 Bedrock of the Community United States 12437 Posts	Posted 10/25/2011 9:38 pm RPM= repunched mintmark OMM= over mintmark Prior to 1990, mintmarks were applied to each working die via a handheld punch. That led to variability in the positioning of mintmarks and occasionally a mintmark would be punched twice leading to an RPM. At the time, Philadelphia prepared dies for all the branch mints. If a die was accidentally punched with two different mintmarks, an OMM would result. For obvious reasons, RPMs tend to be much more common than OMMs. Since 1990, mintmarks have been part of the hub design used to create dies so RPMs and OMMs are no longer possible. Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 10/26/2011 01:20 am The mint marked dies were punched with a punch from their mint. Occasionally a die was transferred from one location to a second location. The punching were placed over (most times) the previous mint mark. When it didn't cover it totally, then an over mint mark happened. RPMS: OMM: Report this Post to the Staff
	Replies: 4 / Views: 1,093

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