hello I'm going to try with the aid of some pictures a specific gravity test on two silver coins the one on the left was a new purchase and the right I've had some time 
first thing I did was to weigh them both dry first the left one 
then the right one 
right one looks to be a little light? Then I weighed the left one submerged by some cotton in water 
and then the right one 
then I divided the dry weight by the wet weight for both coins 
now I hope I have done this correctly some feedback would be appreciated but I think that the one on the right is bad although too look at it it looks fine I also done the magnet test and the was a very notable difference on the right side coin I'm sure it's no good hope to hear some feedback thanks mike
Looks stunning !
Thank you
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I think the one on the right might be, well you know. Not .999 silver. Great test though, if i remember correctly you did it right.
Cheers mate I think it's a bad one but it's been interesting doing the tests thanks for the reply
good
Thank you
No one does it like Perth!! The fake is a pretty good counterfeit, but side to side, there are noticeable differences in the print. the text is a bit chunkier than the authentic one. Thanks for showing us how to conduct this test!
Thanks for your reply cheers
Interesting test:) Thank you:)
Cheers mate
nice test I maybe one day I will use it