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 Replies: 35 / Views: 28,074 |
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Pillar of the Community
Canada
1571 Posts |
Dropping coins is just asking for dings and dents.
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Valued Member
 Canada
224 Posts |
Not like we're dropping coins worth anything past their FV.
And even with an audio-program, there's going to be that constant distrust!
I just simply stay-away from '67 quarters and dimes
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New Member
United States
3 Posts |
Here's a thought. If the two types have the same weight, have the same diameter, but have different densities, they necessarily must have different thicknesses. The more dense coin would need to be thinner. Since all coins have "topography" (areas of high and low), it's unlikely you're going to find a single thickness published anywhere. Thickness measurement is further complicated by wear. But if there's a location on the coin where a "non-wearing" (protected) area on the obverse (the background or field) lines up with another non-wearing area on the reverse, and you measure every coin at that location, you should find the coins separate into two distinct groupings. The set of thinner coins should be the 80% alloy and the set of thicker coins should be the 50%.  |
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Pillar of the Community
Canada
3733 Posts |
the amount of difference would be so minuscule it wouldn't warrant checking..for the average collector ..
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Moderator
 United States
189767 Posts |
 to the Community, Archer RA! |
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Pillar of the Community
Canada
2784 Posts |
Archer RA I want to show you what is on. one of my mackerel dimes fins. yes letters how is that possible  |
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Valued Member
United States
422 Posts |
I use the World Coin Books
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Pillar of the Community
Canada
2784 Posts |
hozer I use the World Coin Books. what do you mean you use this book. I see the finns on the mackerel are disconnected from the body. I wonder are they all this way.  |
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Pillar of the Community
Canada
2784 Posts |
can some one tell me was gold or bass one of the metals. used as a filler for the silver on these dimes. I notice this yellow coloured metal. here an there on the surface of the coin.
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Pillar of the Community
Canada
2784 Posts |
its like this coin is plated with silver. was there any gold centennial dimes. where ever there is a little scratch it has yellow metal under the surface. see this anomaly near the mouth.  |
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Pillar of the Community
Canada
2784 Posts |
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Pillar of the Community
Canada
2784 Posts |
the groove are more like. the Philadelphia mint grooves. that yellow is everywhere. that would be great if this was there metal. any thoughts have agreat one.   |
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Pillar of the Community
Canada
2784 Posts |
what would a pure nickle 1967 bobcat be worth.
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Bedrock of the Community
Australia
21788 Posts |
Full destructive chemical analysis should yield trustworthy accurate results to determine if a coin is / was 50% or 80% silver.
To be honest, I am not keen on this approach.
Perhaps XRF testing (non destructive), would yield even more accurate results, but the fee for testing is not justified.
Drop ping test quite OK on melt value coins.
According to Krause, there is no difference in the value of the 1967 50% and 80% 10 Cents and 25 Cents coins, across the grades.
I cannot think why anyone would want to take a silver coin out of a 1967 mint set to test it for fineness, especially when it can be safely assumed that it is going to be 80% fine.
For these reasons, my attitude would be to just collect all of them in superior condition, without question.
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Pillar of the Community
 Canada
1783 Posts |
"We are poor little lambs...who have lost our way...Baa...Baa...Baa"
In memory of those members who left us too soon...
In memory of Tootallious March 31, 1964 - April 15, 2020
In memory of crazyb0 July 27 2020. RIP.
In memory of T-BOP Oct. 12, 1949 - Jan. 19, 2024
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Replies: 35 / Views: 28,074 |
First Page
Posted 02/19/2017 4:08 pm
