Morgan Dollar Fakes.... or bad Sigma Reading?

All 3 of these coins tested fake on my Sigma Pro.

The diameter is good, weight is good, but reads bad at 1900-1945 90%. Coin is moved to the yellow when the setting is moved to pre-1900 90%

The dealer I bought it from said it could have a alloy mixture issue.


So what are your thoughts?

Details, sure, but are they real?

 

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Here’s the sigma readings

 

@messydesk

 

They all look like banged up genuine coins. I'm not sure how I'm supposed to interpret the display on your device.

 

To me they look genuine just well circulated.

 

Coins in the green are good. Coins in the yellow are considered okay but to check other measurements. Red means it’s fake.

 

I only use my Sigma Pro for bullion. I use weight and my X-Ray Spectrometer for coins

 

Agreed that they all look good from the pictures. Why the distinction between pre-1900 and post-1900 90%?

 

Delete - Saw the pics wrong