I took a gamble with a pile of buffalo nickels at a swap meet and I seem to have found these possible gems. I feel confident with one of the coins but need opinions either way, thank you. Coin #1: With an obvious S mint mark. To me, I think this one is a solid 1913, but what do you think? Coin #2: As you see with this one, it's a bit harder to tell, for me at least because I'm not so much of a buffalo nickel expert.
Coin 2 looks like the loop more aligns with a 5 than a 3. Do an overlay to see if you have a match or not.
The second full sized photo Buffalo appears, from this vantage point to be a 1915D. I do not see the proper curvature to indicate a 3. The other looks good.