In a box of nickels? If from the bank it may be uncirculated, but it's not a proof. Proofs are specially minted and not circulated for you to find in a box. Even if it was originally a proof it isn't now being mixed in circulated coins.
So how do you prove they were proofs for some of them? No question the numerical number for the condition will drop much lower as will the value of the coin.
Now that is one VERY CLEAR SHARP '63 Jeff., and out of a box yet. Better than some original minted proofs. Congrats on saving it from circulation.
Very true as a date and/or mint mark could give it away. The finish gets worse in most cases and comparing to a very good unc coin can be rough as the unc coin may be better. I would need proof of a coin said to be a proof when found in circulation and that's sometimes very hard to do in many cases.In some years, the only thing minted in San Francisco were proof coins. In others, the finish on the coin is an indicator. Some proofs have been circulated heavily and it can be difficult. For some reason, I'm able to spot them.
Yes, i am aware it isn't a grade, but even proofs can get a grade. So let's give it a PF68 instead of an unc 68 just as an example ok? The condition in both cases to me would make it worth equal to the unc 68 even if it is a proof, but that's just me.Proof isn't a grade. It's a coin struck on special made dies. No matter what the condition, it will always be a proof coin.