Any idea what these are worth? I know they are one of the keys to the buffalo series. Also, I am not experienced in grading buffalo nickels, so any help with that is appreciated. The one with more detail is porous unfortunately. Thanks, RedRaider
From those photos, I'd G-VG with all the wear on them. Value, $65 - $80 give or take. Numismedia.com lists the 1913S G at $60 and VG $106.
The one on the right is probably good so worth about $50. The one on the left has been acid treated so you might get $10 for it.