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 Replies: 32 / Views: 4,364 |
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Pillar of the Community
United States
7390 Posts |
Send it to anacs under error service. Then you will know for sure...
*I say anacs because you don't need a costly subscription to submit it
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Valued Member
 United States
88 Posts |
Yeah I plan on getting a few coins that would be worth submission set aside, just nice to get opinions from collectors that are far more knowledgable than myself, that is why I appreciate any and all information provided on the forum to discern said coin before money is spent and possibly wasted.
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Moderator
 United States
23522 Posts |
I think an XRF analysis would solve this one instantly, but I have to wonder if anyone in your area would have an analyzer.
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Valued Member
United States
88 Posts |
Is that the 15000 dollar metal testing machine?
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Pillar of the Community
United States
1781 Posts |
The color is wrong it looks chromium plated. I have some like this in a paper weight.
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Valued Member
United States
88 Posts |
Quick update, dont know if it means anything or not. Went through my other kennedy halfs from 65-70, found only one 67 that weighs and scratches on the test stone in the same manner 11.2 grams rub the edge it shows silver in color and angle it they y both display copper. Now I only rubbed the one that weighd the same using a smooth black obsidian like test stone
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Bedrock of the Community
United States
17884 Posts |
Quote:
It's a gram and a half light to be pure silver, but closer to the earlier clad silver examples which ended a year earlier at 11.5g. Quote:The 1971 struck on a silver-clad planchet is a known error (in the Red Book), & quite a valuable one. The 1971 struck on a 40% silver planchet was a Denver issue. Philadelphia never struck 40% silver halves so there is nowhere for a 40% silver planchet to come from to make a 40% silver 1971. An XRF test might or might not tell you much, it depends on whether or not it could read through a plating layer. Although if it is plated the reading still wouldn't be right for a clad or a 40% half. A specific gravity test would also answer the question. The close weights for the coppernickel clad and the 40% silver, plus the wide mint tolerance, makes a determination by weight almost always inconclusive. |
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Valued Member
United States
88 Posts |
Performed gravity testing to the best of my ability, I used a 1969 half, Franklin half and the 71 in question as well as a Troy oz 999 coin. Both Kennedy halfs come back within a tenth on my scale. Both show less than 40 pct silver as well as the Franklin which shows to be about 60 pct but the 999 round came back as 960ish I performed the tests several times on each coin. I may not be doing it in the best manner but with it coming in so close to the 69 test it has me still puzzled |
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Bedrock of the Community
United States
17884 Posts |
What values did you get with the test?
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Valued Member
United States
88 Posts |
I would have to perform it again to be exact but I know both Kennedy halfs tested at approximate 200-280 silver and the Franklin half showed 660 ish and try oz showed 967 ish |
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Bedrock of the Community
United States
17884 Posts |
That would mean the Kennedy was around 9.3 the Franklin 10, and the troy oz around 10.4
The oz is pretty close but the other two are both way off.
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Valued Member
United States
88 Posts |
Ya, kind of interesting I will have to get better distilled water and try it again
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Pillar of the Community
United States
4692 Posts |
If sent to a TPG, would they test it if asked? |
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Pillar of the Community
United States
1781 Posts |
My guess is there would be no reason to test this coin. To me the color is so far off, being that of chrome or nickel, that they'd just body bag it and keep your money.
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Pillar of the Community
United States
5208 Posts |
Why don't you just carefully bounce it off of a stone countertop and listen to the ring.
Edited by jack jeckel
05/02/2015 10:04 pm
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Replies: 32 / Views: 4,364 |
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Posted 04/30/2015 10:13 am
