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 Replies: 11 / Views: 2,338 |
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Pillar of the Community
United States
1101 Posts |
I need some expert help with this clad half dollar. As near as I can determine, it was struck on a planchet that was incomplete. The weight of this coin is about 10.8g. The book shows it should be 11.34g. Any help would be appreciated.   |
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Moderator
 United States
14463 Posts |
I am not sure if it was an incomplete planchet, because that looks lots like someone used a grinder or sander to remove part of the coin.  |
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Pillar of the Community
United States
4846 Posts |
but why would those lines not affect the devices? you can still see kennedy's ear, you wouldnt see it if it were just ground down.
It almost looks like a pre strike clamshell or planchet split to me. The obverse was partially clamshelled, and the reverse was partially weakly stuck as a consequence of that. You can see a small piece that didnt fall off at 4:00 and was almost fully stuck on the other side
Edited by Adam_E
03/09/2016 02:02 am
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Bedrock of the Community
United States
62064 Posts |
I'm thinking this is a split off after strike planchet issue. There was posted a split off planchet before the strike and it didn't have those lines   Another time there was a split off planchet that happened after the strike:  But the split off planchet after the strike wasn't a clad layer coin. Another point I feel it is a split off is the loss of weight to the coin. So I sent Mike Diamond a message to see what it really is. Here does have a link on this, but again no actual splitting off of a small amount of the cladding. http://www.error-ref.com/?s=split+off+planchetSo we will have to wait for him on this one. So time to get some sleep:  |
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Pillar of the Community
United States
4846 Posts |
I dunno coop, I feel like if it were split post strike, we wouldnt see the devices still under the lines as clearly, theyd be sort of mushed out like on the nickel I apparently have. the lines are probably there because the metal composition doesn't split as cleanly as it would on the copper cent check out this example here http://www.australian-coins.com/err...coin-errors/ fig 4 shows a similar pattern to phil's Edited by Adam_E
03/09/2016 05:16 am
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Pillar of the Community
United States
2737 Posts |
This coin was vandalized outside the Mint. Both faces were crushed and abraded against two textured surfaces.
Error coin writer and researcher.
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Pillar of the Community
 United States
1101 Posts |
Thanks for your input. Adam E, I agree with your comment about the ear. It appears to be struck through the lines. If it were abraded outside the mint, wouldn't the ear be gone? And there are actually three small areas of full thickness, fully struck, one on the obverse, two on the reverse. You can see the bottom of the Y of LIBERTY struck on the obverse one.
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Pillar of the Community
United States
1101 Posts |
Here are some detail photos. Ear area.  Y of LIBERTY.  Face area.  Full struck area in center of reverse.  Edited by Phil310
03/09/2016 10:12 am
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Pillar of the Community
United States
7390 Posts |
Phil, Mike Diamond is THE guy people send errors to to have them identified and cataloged. When he speaks consider it close to gospel. If he was unsure he would say so. If he says PMD, there's a 99.999% chance that's what it is. Interesting coin though! and heck, I even though it could be something when I first saw it and coop too but when mike chimes in the guessing is over  Google "mike diamond coneca" if you like |
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Pillar of the Community
United States
1101 Posts |
Thanks to all who responded! I appreciate the help.
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Bedrock of the Community
United States
12437 Posts |
The coin is also out of round on the right side, lending more evidence to PMD. |
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Pillar of the Community
United States
1101 Posts |
You are right, biokemist6, it is out of round.
Obverse side measurements 12:00 o'clock to 6:00 o'clock - 1.230"
3:00 to 9:00 - 1.220
10:30 to 4:30 - 1.235
1:30 to 7:30 - 1.213
Good observation.
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Replies: 11 / Views: 2,338 |
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Posted 03/09/2016 01:39 am
