FlyingAl ✭✭✭✭✭

This is a somewhat known number if you pay close attention. The TPGs used to use (still likely do use) the grading contests at the large shows to screen for potential graders. 70-75% was usually the … (View Post)

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Ah, to see where we've all come from... From this: . . . To this: (View Post)

Very interesting. I wonder if the TPGs XRF each of the coins that come in for error attribution. (View Post)

We had a fun chemistry lab today, and it got me thinking. We took some cents and electroplated them in a solution of zinc and hydrochloric acid (the supplies for which could be bought rather cheaply)… (View Post)