http://armycadethistory.com/Mystery%...hotos_pg13.htm
Note the BC specific Corps of School Cadet Instructors cap badge or general service badge, general service collars, and no shoulder titles.
Pre-53 Cadet Services of Canada Service dress uniforms in my collections have "Canada" titles on the epaulettes. In my research, resources always reference CSofC, never CSC in relation to cadet instructors. Most of the old timers I talked to who had served in the CSofC wore regimental accoutrements of the affiliated regiment, except as very junior officers, or as officers with "closed" (private) school cadet corps.