Steve -
Yours is pretty much within the "normal" range. The knives were finished/completed over a 10+ year period of the Viet Nam war, so you aren't gonna have the same cat doing every one of them. Your knife still has a hump, not as pronounced as the 14 pictured, and to me, appears to be earlier than that sheath, as is the stone. The 1/8" inch hilt material was generally used probably until around maybe 66(?) when RMK went to the 1/4" material used on large blade 14's and 18's. You may find an outlier here and there.
Also, the choil is relatively "square" for lack of a better term, which would indicate little work was done on the knife. If you look at the early Solingen blades when little work is done, if any, the choil is almost a right angle down to the blade.