Clearer photos would help. Red Book does not list a 1938 D/D but The Cherrypicker's guide only lists D/S, but none look like your blurry photo. Please repost clear in focus photos of the MM for more opinions.
I attempted to enlarge your MM but still it is difficult to tell exactly what you have. Any larger and it pixelates.
There is a 1938 d over d where the mint mark was punched in twice. Looks like the OP’s coin might be a bingo.
@Santinidollar Reference please. I have several Buffalo Nickel reference books and for the year 1938, only a D/S is listed. The 1937 has a D/D.
Clearer photos of the mint mark would help a lot. IMO it does look like RPM-002. It's also listed here:http://doubleddie.com/985741.html