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All Forums Category: US Coins and Currency Forums Forum: US Modern Variety and Error Coins

RPM Vs MD

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jbuj
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 Posted 08/06/2012  4:33 pm Show Profile   Bookmark this topic Add jbuj to your friends list Get a Link to this Message Number of Subscribers
This may be a silly question, but here goes. If mint marks on Lincolns are hand punchd until 1989 how can some of them be considered MD and not an RPM? I have found a bunch that look as if they are MD (flat shelflike), but kept them just in case.
coop
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 Posted 08/06/2012  10:33 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
?
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jbuj
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 Posted 08/06/2012  10:46 pm  Show Profile   Bookmark this reply Add jbuj to your friends list Get a Link to this Reply
Guess I am just scatter brained right now. Thank you
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coop
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 Posted 08/06/2012  10:52 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
All dates/denominations can show Machine Doubling.

Pre 1990 coins can show a RPM.

If the mint mark is doubling on the 1990 forward coins, it would be a doubled die or Machine Doubling depending on the die that struck it.

RPMs/OMM/doubled dies are on the die and called varieties.
Machine Doubling is from a normal die that moved during the strike, damaging the devices on a coin/coins.

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Jayman931
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 Posted 08/07/2012  01:22 am  Show Profile   Bookmark this reply Add Jayman931 to your friends list Get a Link to this Reply
When I first got into the hobby I think I had a similar confusion. Every coin is not "hand punched"...the actual die is hand punched...this allows for human error in the making of the dies. I am sure someone else can explain this better than I just did...?
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coppercoins
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 Posted 08/07/2012  07:36 am  Show Profile   Bookmark this reply Add coppercoins to your friends list Get a Link to this Reply
Each die received a hand-punching by a mintmark punch. Each die made thousands upon thousands of coins. ANY coin going through the minting press could be machine doubled.

Any coin can be machine doubled.
All coins made by a die showing a repunched mintmark will reflect that repunched mintmark.
Any coin can be machine doubled...even a coin with a repunched mintmark.

The two are actually completely unrelated in cause.
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jbuj
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 Posted 08/07/2012  10:00 am  Show Profile   Bookmark this reply Add jbuj to your friends list Get a Link to this Reply
Ok thank you all, I have a better understanding now
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All Forums Category: US Coins and Currency Forums Forum: US Modern Variety and Error Coins



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