The CEF 15 on the weapon mentioned above "Canadianicon Expeditionary Force 1915" NOT 15th Batt. You will find "14" and rarely "16". My Ross (ex-Canadian War Museum) an M.1910 is clearly regimentally stamped on right side butt "50 Inf. Canadians" (Calgary). Time to put an end to the belief that this CEF15 is a unit mark. This foolishness started back in the late 1960s!