OMG "5 IN CHEEK DIME" 1966!!!!!

The problem you run into is that this CANNOT occur during the minting process. There are no other coins that use a crude, large five, so it can't be from a punch. If you look at the process for making the dies, it can't happen there. In addition, your "5" is recessed into the coin which means it would have to raised on the die. Not happening. It couldn't be on the planchet because pressure during striking would have distorted it as the metal flowed, plus I can't think of how it would be on a planchet in the first place.

However, there are numerous ways a coin can be damaged after it left the mint, and it wouldn't be surprising if something happened that left a mark that looks like a 5.

I'm not saying that you don't see something that looks like a 5. But, I am saying that whatever made that mark, it absolutely, positively did not happen at the mint. And that's what others have told you as well.

And don't forget, just because it's listed on ebay doesn't mean it's real. Anybody can list anything, with any description. Unless it's authenticated, the seller has no more credibility than someone who lists a religious image burned onto a piece of toast.

 

The problem you run into is that this CANNOT occur during the minting process. There are no other coins that use a crude, large five, so it can't be from a punch. If you look at the process for making the dies, it can't happen there. In addition, your "5" is recessed into the coin which means it would have to raised on the die. Not happening. It couldn't be on the planchet because pressure during striking would have distorted it as the metal flowed, plus I can't think of how it would be on a planchet in the first place.

However, there are numerous ways a coin can be damaged after it left the mint, and it wouldn't be surprising if something happened that left a mark that looks like a 5.

I'm not saying that you don't see something that looks like a 5. But, I am saying that whatever made that mark, it absolutely, positively did not happen at the mint. And that's what others have told you as well.

And don't forget, just because it's listed on ebay doesn't mean it's real. Anybody can list anything, with any description. Unless it's authenticated, the seller has no more credibility than someone who lists a religious image burned onto a piece of toast.