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 Replies: 9 / Views: 1,316 |
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Pillar of the Community
United States
1572 Posts |
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Bedrock of the Community
United States
62064 Posts |
What is up with the different color on the obverse? Is this acid contact in those areas? The rims seem flat looking?
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Pillar of the Community
 United States
1572 Posts |
It is a yellowish crusty substance, above the surface, that may come of with acetone. It doesn't appear to be acid contact. It may stain the coin some though. Yes, the rims do not look normal, they are kind of flat. It is a strange coin for sure.
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Bedrock of the Community
United States
62064 Posts |
So if it doesn't look acid etched, then it might be a thinned planchet? If something is on the coin, the weight maybe even more reduced when you remove it?
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Bedrock of the Community
United States
12437 Posts |
The flat rims and weakness on the shoulder and above the NW corner of the Memorial indicate a thin planchet, there was simply not enough metal to flow into the deepest recesses of the dies.
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Pillar of the Community
United States
1572 Posts |
That makes perfect sense, thanks. Why does it have such a distinctive high-pitched ring when dropped?
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Moderator
 United States
56855 Posts |
I was thinking thin planchet. Looks like Lincoln is a czar with that get-up  John1  |
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Bedrock of the Community
United States
17884 Posts |
Quote:
Why does it have such a distinctive high-pitched ring when dropped? The ring tone is a function of both the composition and the dimensions of the coin. If you have two disks of the same diameter and composition the thinner one will have a higher pitch. |
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Pillar of the Community
United States
1572 Posts |
Mysteries solved, thank you so much! I appreciate all the help.  |
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Pillar of the Community
United States
2651 Posts |
Abe looks like he is Taliban
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Replies: 9 / Views: 1,316 |
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Posted 06/12/2014 12:17 am
