CANADA - ROSS pattern 1910 MKII Queen's Own Rifles of Canada

Rare ROSS bayonet model 1910 MKII before end of 1915, well marked ROSS RIFLE PATTENT 1907 and dated 12/15, modified blade, leather sheath well marked and dated 1916 and regimental marking  255ème Bataillion  Canadian Expeditionary  Force (Queen's Own Rifles of Canada) and named T.WILLIS, no pin for maintaining the pin spring for this pattern made after end of 1915, regimented, mint condition, impossible to upgrade.