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PMV Pro odd behavior


GoRebels

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Playing around with a PCGS slabbed unc 1932-s Washington Quarter under the ‘slab sensor’ on my unit set to “90% Silver 1900-1945" and found the readings to be off the scale to the right.  Setting to "90% silver pre-1900" moved the readings to the yellow band on the right side.

What gives?

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Any pictures?

What is the expected purity? Do you know what else is supposed to be in the mix? just a tiny bit more/less copper is enough to send the reading off

Other similar coins you have checked on the PMV Pro?

Everybody knows the war is over / Everybody knows the good guys lost
                               Everybody knows the boat is leaking / Everybody knows the captain lied..   Be seeing you2 sm.jpg

                                                                                                                                 “The market can stay irrational longer than you can stay solvent”

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