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coppercoins.com Forum Index arrow Error Coin Questions arrow 1975 d mint mark??????

1975 d mint mark??????
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ldarrellc
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PostPosted: Thu Jun 05, 2008 6:31 pm Reply with quote

what does everyone think on this one??


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Bob P
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PostPosted: Fri Jun 06, 2008 5:36 am Reply with quote

Definitely mechanical doubling.
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ldarrellc
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PostPosted: Fri Jun 06, 2008 7:39 am Reply with quote

okay i need some education. how can a mint mark that has been hand punched get machine doubling I am dumb on this part lol
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Dick
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PostPosted: Fri Jun 06, 2008 11:44 am Reply with quote

Darrell, I think I "might" be able to explain. The MM is hand punched, (was before 1990) and on the working die is transferred to the planchet during the strike. The lateral movement, such as a loose die, or worn grooves, ets will allow the die to shift, which scauses the MD. In other words, the MD is always post strike, if I understand the mechanics correctly. I accept any and all corrections to my theory.
Dick

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