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 Replies: 8 / Views: 1,840 |
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New Member
Canada
25 Posts |
Hey guys, I'm hoping someone can explain to me in layman's terms how to tell the difference between the .8 silver and the .5 silver centennial coins.
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Moderator
 Canada
10463 Posts |
XRF analysis is probably one of the few non-destructive tests that would work.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
Canada
1984 Posts |
Is there a difference in weight? Or are the specific gravities of the metals to close?
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Moderator
Canada
10463 Posts |
You would need a pretty darn good scale (Mettler balance) to do that with any kind of precision.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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New Member
 Canada
25 Posts |
What's an XRF analysis? They have the same weights unfortunately.
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Valued Member
Canada
386 Posts |
A while back Samboyellowsub described in detail how to tell the difference between 0.5 and 0.8 coins by dropping them on a table and looking at the sonic signature with a computer and spectral analysis software. He posted some spectral outputs and the difference between 0.5 and 0.8 was pretty distinct. https://goccf.com/t/79454 |
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Pillar of the Community
3352 Posts |
I would start-out by weighing your quarter on an accurate scale ... then I would try melting the coin down in a kiln ... and then try to seperate-out the slag from the metal ... and then I'd try to refine the metals, using cathode & anode technology ... then I would weigh the grams of silver ... then I'd do a quick mathmatical calculation to determine the total percentage of silver compared to the intial weight of the coin ... simple (QED) ahhh crap => but then it may be a bit difficult to slide it back into its album-slot? I'm just sayin'  |
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Pillar of the Community
Canada
598 Posts |
Okay... I've posted about this before, but I don't feel like searching and linking and...  Anyway, I can hear the difference between .800 and .500 Canadian 1967 silver quarters... when your spin them and they begin their flop and start to flatten (a la spinning hubcap) the .800s have a higher pitch ring. Quite noticeably higher when compared to the .500s. btw, the darker toned/tarnished '67s seem to be the .500s... the .800s don't seem to get so black. <<< This is just something I've noticed that may be peculiar to the way I have stored junk silver. Don't trash my madness until you get a buncha '67 Canadian quarters and try the listen test.  As for dimes... well maybe my hearing ain't what it used to be.  >>> edit >>> The '67 fifty cent pieces and dollars are .800 fine. Only quarters and dimes were transitioned from .800 to .500 in 1967. Edited by IBGolden
11/23/2011 9:32 pm
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New Member
Canada
25 Posts |
Thanks IB. That'll definitely the easier way of telling :) I'll give it a try!
Don't think I'd try melting anything lol
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Replies: 8 / Views: 1,840 |
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Posted 11/23/2011 1:45 pm
