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It can correctly verify the weight, thickness, diameter, and shape of 4 different coins.
There is no official guideline given, but anything from.1g.8g should.
Nickel Silver While this has a silver appearance, it has a composition of 60 copper, 20 nickel, and 20 zinc.At 169 though, overpriced in my opinion, as a basic digital scale and good set of calipers will do the same.To check this you will want a good set of calipers.If you are looking to buy junk silver from ebay, you can get their melt values using our US Coin Value Calculator.Grab an old magnifier, the ones that jewelers use, and take a good look at the coin.Just be sure to get one at least 10x the magnification.
Tie psn vouchers for ps4 some string around the coin and setup an apparatus to hold the coin Submerge the silver into the water and record the submerged weight minus the weight of the water cup.
It also can check for the Canadian Maple Leaf, the Austrian Vienna Philharmonic, and the US Silver Dollar (1840-1935).

All you need to do is place the ice on the silver and watch.The missing veins on the feathers and leaves are another big giveaway on this fake.If you have other ways to test for silver, please let us know or leave us a comment and we will be sure to include them!If you are a regular buyer of silver bars this maybe the tester for you as you can buy an entry-level gauge for several hundred dollars unlike the expensive XRF analyzers.If the bar is plated in silver/gold it will give an inaccurate thickness tipping you off that the silver is counterfeited with some other metal.If you are getting readings of 30g or 32g that is reason for concern.The specific gravity test of silver is basically a ratio of densities and due to its chemical composition makeup should equal.49, given by the formula below: This test will weed out those silver-plated or clad coins if they have a composition of some other.This ingenious product sends electromagnetic waves though the metal confirms it with stored patterns.Recommended for you 101 Uses of Silver in Everyday Life 197,197 Preppers Checklist Guide (200 Survival Items) 50,076 17 Amazing Hand Poured Silver Bars Ingots 76,868 Coin Collecting for Beginners (Guide) 122,490.
Also the veins on the feathers and leaves on the back side.

You can read more about it here.