The Canadian Registration number CA000323 is for S. STALL & SON LIMITED, Winnipeg. Sam Stall came from Poland at the turn of the century and founded his coat company in the 1920s by making one coat at a time - literally. By the late 1920s he opened a small business in downtown Winnipeg and began to expand until he became one of Winnipeg's four largest garment manufacturers. Stall specialized in fur coats. The company doesn't seem to be in business anymore, or if they are, they aren't advertising. Canadian registration numbers started being done in about 1970, so your coat can't date before then, and Stall's registration number was digitized in 1997, so presumably, they were still in business until at least then...