I've had a couple and there's not much to tell. They were made as late as 1943 and show a typical two digit date stamp, LB stamp, proof stamp and C Broad Arrow stamp. Rifling is typical SMLE and appears somewhat shallow compared to a No.4. Finish and machining is up to the usual standard for LB.
SMLE's were in use for training in
Canada
, and in the UK no doubt. Remember that the federal government had foolishly agreed to sublimate the Canadian supply system into the
British
War Office, so they divvied out whatever they wanted to the Canadian Army in Britain, when they wanted, and it wasn't necessarily Canadian built equipment.