Hy Osnabruck, from your photo I would say your truck is a 1943 -45 two ton (non plated grill, and eight sided screw in cap in center of the front hub). The Canadian serial number would have been
3,4,or 5 year of production
15 series identification for a two ton
33 designates chassis with cab, with 134 1/2" wheelbase
43 designates chassis with cab, with 160" wheelbase
So the whole Canadian serial number would be something like 41543....., hope that helps.
