I'm late to the party. (My wife thinks that's my middle name.) MS-63 looks spot on. I might have bumped it to MS-63+, but 63 is certainly fair.
FWIW, I'm in a minority when it comes to the 1914 Buffs. With tremendous respect for Ron Pope's scholarship, I do not believe that there is a 1914/1913
DDO. I've looked at quite a few of them, and the most I can see is a gouge, possibly a flaw that was present on the master die and later reduced to eliminate it from the later hubs.