The Ping Test won’t catch all of the Real Silver Fakes, but it does catch this one. Not sure if the Fake was cast, lightly pressed, made with a completely different 90% alloy, or something else? Definitely Fake. Note: the Ping Test is for alloy identification and acoustic signature matching only. High level Fakes made from the same alloy will absolutely pass a Ping Test. Recently found a Fake Buffalo Nickel that I believe passes the ping test. Hope to get that verified with the StackerTools app