Found this in a new box of 2021 cents. It will go into a flip as a 2021 cent unstruck planchet, although I won't be able to prove it...
It's always good to document stuff like that on the flip IMO. There really isn't a premium if the planchet can be traced to a date (as you said, how would you prove it), but somebody should appreciate the info later. Once the data is gone, it's lost forever
Nice find! Definitely put it in a flip and label it. Your personal documentation is not enough to prove it but it’s better than nothing.
