In my Jan. 1, 1946 Red Book Used Car Market Report, it lists 1944-45-46 Chevy trucks, with OPA Ceiling Prices.
Serial #'s for Model BK half-ton pickup on 115" WB begin at BD-580921 and up.
Serial #'s for Models MR, MS, MY and MT on longer chassis start at BG-580921 and up.
Maybe this will help out. I love Red Books for the amazing amount of info they contain.
TG
