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 Replies: 16 / Views: 2,869 |
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Pillar of the Community
United States
4989 Posts |
Wife brought home an unusual coin today. 2007-D Washington quarter with very reflective proof type fields, white edges (no trace of copper), and looks blazing white through a tissue. Don't have a scale to weigh it. I'm confused since the 2007 silver issue proofs are supposed to be San Francisco not Denver mint. Can someone help? Picture attached. I'm a novice at these State Quarters so apologize if this is nothing unusual:  |
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Pillar of the Community
United States
1211 Posts |
Only Silver issued was "S" mint proof.
This may be just a very newly broken out of the case uncirculated Denver mint coin.
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Pillar of the Community
 United States
4989 Posts |
Confusing thing is the white edges and white appearance through a tissue. Did denver strike any on silver planchets as demos?   Edited by fenton
12/28/2010 4:21 pm
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Pillar of the Community
United States
4989 Posts |
Surfaces are also mirror reflectivity:  Edited by fenton
12/28/2010 4:35 pm
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Bedrock of the Community
United States
11951 Posts |
Very interesting coin
I think next step is to get it's weight
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Pillar of the Community
United States
4989 Posts |
Yeah I think it is time for me to invest in a scale - do the ones they sell at the post office work well for coins?
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Rest in Peace
 United States
1380 Posts |
There were / are after market companies who sold State Quarters plated with gold, silver and platinum. This may be a plated quarter broken out of a set. I don't know how the plating would change the reflectivity of the fields though. |
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Bedrock of the Community
United States
12437 Posts |
Quote:
do the ones they sell at the post office work well for coins?
Probably not since mail is weighed in ounces and not grams. You can find pocket scales on ebay accurate to +/-0.1 grams for $20 or so. If weight is normal for a clad coin, it is a post-mint plating job as jgfindring mentioned. When people find out how worthless those things are, they inevitably get spent. |
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Moderator
 United States
187702 Posts |
I agree with the last two posts.
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Pillar of the Community
United States
764 Posts |
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Pillar of the Community
United States
1027 Posts |
Amazon has a big selection of coin scales. You probably want one that measures in 0.01 gram increments and is as accurate as your budget allows. Just go there ans search for "coin scales" or "jewelery scales". They also carry a selection of calibration weights.
Edited by clairhardesty
12/28/2010 5:59 pm
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Pillar of the Community
United States
4989 Posts |
Thanks must be silver plated I've ordered a coin scale to be sure
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Pillar of the Community
United States
764 Posts |
Maybe it is platinum plated and has a dollar worth of platinum on it ^_^
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Pillar of the Community
United States
4989 Posts |
Confirmed it is plated probably platinum. I stripped a bit of the surface off one portion of a reeded edge and there was copper visible underneath.
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Bedrock of the Community
United States
12437 Posts |
It could be either silver or platinum plating. I notice that you took a pic of the tissue test and it passed but I am curious how platinum would react to the tissue test  |
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Bedrock of the Community
United States
17884 Posts |
Probably silver and not platinum. Due to the high price of platinum, the thickness of the platinum plating is almost theoretical. Consumers Reports did a test on some of those gold, silver, and platinum plated quarters to determine what the value of the gold, silver, and platinum on the coins was. They came up with figures for the gold an silver but they could not detect any platinum on the platinum plated quarters.
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Replies: 16 / Views: 2,869 |
Posted 12/28/2010 4:15 pm
