NEED SOME ADVICE PLEASE

I have a 1964 d error coin. I'll post pictures. Looking for some feedback on the errors. 

Looks like doubling on the front of coin. Possible repunched mint mark. Lots of problems on the back of the coin. 

Most of the pictures are of the reverse. That's post mint damage most likely marks from an automated coin rolling machine, not a mint error.

It might be a RPM which isn't considered a mint error. Here's a couple of pictures of 1964 nickel RPM's

I don't see anything on the obverse. If there was some machine doubling it's camouflaged by the wear and normal circulation damage.

Thank you. 😊