Possible 1964 D/D nickel?

Hi all,
I found this nickel that might be a D/D but I can't tell if it actually is or if the mint mark is just worn down. Perhaps someone could help clarify for me? Thanks!
https://drive.google.com/file/d/1hWYQY_pHxg-nTZ9d_MzESU5n1FZ4CH4k/view?usp=sharing
https://drive.google.com/file/d/1hWYQY_pHxg-nTZ9d_MzESU5n1FZ4CH4k/view?usp=sharing
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Comments
The following sites have comprehensive listings of RPMs. Check them for an EXACT match
Www.doubleddie.com
Www.varietyvista.com
There is no way to tell from those pictures.... Need a close shot of the MM... and clear. Cheers, RickO