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 Replies: 10 / Views: 2,626 |
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Valued Member
United States
234 Posts |
Hello again, I attended the Inland Empire Coin Club's show in Spokane last weekend and had a great time loading up on a ton of varieties. This is one of the coins I picked up along the way. It is a 1970-s proof large date that appears to be a doubled die obverse. I am hoping its 1970S-1DO-014P, but I would like some other opinions. There are good separation lines on the date, but also similar ones on the mint mark (bad sign). Also, some of the devices appear to be machine doubled, while others look like true doubling. Hopefully, this can be seen in my photo's. I could not match any die markers to those listed on Coppercoins. Obverse  Date and mint mark. Separation lines can be seen in the digits 9, 7 and 0, but also on the mint mark.  Close up of "God."  Close up of "In."  Tru - This area looks like MD to me.  We - Possibly more MD?  Thanks in advance for any help and have a great week everyone! Chugly |
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Pillar of the Community
United States
4000 Posts |
It certainly looks like a DDO to me! |
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Pillar of the Community
United States
7629 Posts |
No. It's Machine Doubling. Easiest way to tell is that the date and mintmark are affected together. |
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Pillar of the Community
United States
4000 Posts |
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Valued Member
 United States
234 Posts |
Thanks Chuck. That was my fear as well. My confusion was that I have never seen Machine Doubling leaving the thin separation lines as seen on the top of the digits of the date. Oh well, at least I paid normal price for it:). |
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Pillar of the Community
United States
7629 Posts |
That all depends on how the Machine Doubling affected the 0coin - some cases will be much more minor than others. One of the biggest triggers here is the fact that the letters in the motto have the correct size and shape, yet show doubling. A true doubled die would have lettering that looks too thick, and the separation would show the division in the thickness that outlines the normal shape of the letters. |
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Pillar of the Community
United States
4000 Posts |
I wasn't overly confident about the motto, but I fell for the date.
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Valued Member
United States
234 Posts |
Me too Scooby! The date also looked really good to me and I fell for it "hook, line and sinker." As usual, I have a lot to learn, but thanks to all of you great people on this site, at least I AM learning!
Chugly
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Moderator
 United States
15388 Posts |
Great detail photos Chugly! Curious here for my own education ... I know there is a year whereby the US Mint included the mint mark on the master die ... and all years prior to that date any doubling of the MM is a sure sign of Machine Doubling (like this 1970-S). I'm thinking this change occurred in 1990 ... so all possible double die prior to this date with mint mark doubling are truly machine doubling. All possible double die with mint mark doubling post this date might be truly double die. Help me experts ... what year did the master die start to contain the mint mark? David Take a look at my other hobby ... http://www.jk-dk.art |
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Pillar of the Community
United States
601 Posts |
Just like you said David, 1990.
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Pillar of the Community
United States
7629 Posts |
They changed the proofs in 1985.
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Replies: 10 / Views: 2,626 |
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Posted 04/04/2011 6:28 pm
