Thanks for posting the detail photos. I'm still not sure on whether your coin is
1913 DDR-002 (FS-1802).
There appears to be the correct doubling on the buffalo's neck. There is a die crack from the second "S" of STATES through the dots and "OF" to the A" of AMERICA. That isn't a reliable marker, because it is a common area for die cracks. There appears to be the correct doubling on EPU, but the image just isn't sharp enough to be sure. (I enlarged and enhanced your photos below.)
If it
is the FS-1802
DDR, there is a good bump in value. That's a popular and difficult
DDR to locate. It's easier to spot in later die states and on circulated coins, because the later die states have more prominent cracking through STATES OF AMERICA and because there is less reflectivity from the surface.
On the grade, the new photos resolve some of my concerns about luster disruption. I'm convinced this was a bookshelf album coin, and picked up some subtle scuffs from the mylar sleeve brushing against the coin. I think you have a solid high midrange UNC (64+/65), with MS-66 possible. The reverse is fantastic.
I'd definitely recommend taking your coin to your local coin shop and asking the owner to put it under a microscope and compare it to the photos on Variety Vista. I think it's at least 50-50 on the
DDR. That would be well worth your time. If it is DDR-002 (FS-1802), you really have something there.
Here are the details of the enhanced photos you posted:


