$20 For $20 Not 99.9% Silver? - Coin Community Forum

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Author	Replies: 7 / Views: 1,823
wilsonwu89 Pillar of the Community Canada 706 Posts	Posted 10/11/2016 06:35 am http://www.ebay.com/itm/2014-Canada...AOSwmLlX4a2U Came across this listing on ebay. In the photos, he claims these coins are 91.7% Silver. Is there any legitimacy to these claims or is this a case of a kuku? Report this Post to the Staff

silverwolf Pillar of the Community Canada 3733 Posts	Posted 10/11/2016 06:50 am i really doubt his numbers, one of the 20 for 20's he is saying is 85%, and one is 90%. Report this Post to the Staff
john100 Pillar of the Community Canada 5324 Posts	Posted 10/11/2016 09:42 am One wouldn't expect the RCM to be off 10% or .01% Report this Post to the Staff
SPP-Ottawa Moderator Canada 10458 Posts	Posted 10/11/2016 1:30 pm I can smell the bull dung that he stepped in... and I would call that bluff... I would pit his measuring and specific gravity measurements against my XRF and quantitative SEM in my lab at work... anytime... even if he was using a Mettler Balance. I use the $20 for $20 coins and silver maple leaf coins sometimes, as a means to run a quality control test on my instruments. Sometimes the XRF detector can get "flooded" by primary peak signals and create false secondary signals - so using RCM $20 for $20 coins or a silver maple leaf are a good measurements that all is well... EVERY SINGLE ONE I have tested from the RCM in the past 7 years, is 100% silver. "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 Oppenheimer Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US My eBay store Report this Post to the Staff
Redzapsid Pillar of the Community Canada 1571 Posts	Posted 10/11/2016 8:12 pm I wonder what the seller thinks makes up the rest of the weight. Report this Post to the Staff
oriole Pillar of the Community Canada 5241 Posts	Posted 10/11/2016 8:40 pm His listing does not explain the nature of the tests that determined, allegedly, the silver purity. Also, people can make mistakes in tests. So it is reasonably safe to discount this claim pending proof. Report this Post to the Staff
Redzapsid Pillar of the Community Canada 1571 Posts	Posted 10/11/2016 8:56 pm I'm not sure I understand the reason for including any of his "information" in the ad. Does he think having less silver will make them more valuable? Like an an error? There certainly seems to be at least one error here, but I don't think it's with the coin. After reading the description of the coin, where he talks about his testing, I'm going to have to assume the coin is a regular, .9999 pure silver coin. I especially like the end of the item description where it says, "But I make no claim as to authenticity of these items, so I provide due diligence". Report this Post to the Staff
DBM Pillar of the Community Canada 9864 Posts	Posted 10/14/2016 01:48 am Too many variables in home SG testing. Not very scientific. All you can tell by a home SG measurement of 10.38 is that the coin is likely sterling or better. "Dipping" is not considered cleaning... -from PCGS website Report this Post to the Staff
	Replies: 7 / Views: 1,823

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