Otto - Here's some info with a better description of what are known as 1946 2nd Series trucks like his truck.
The "1946 2nd series GMC" refers to the GMC trucks that continued to be sold under the styling of the previous C-Series/CC-Series and CF-Series/CF-Series (for COE models) for the 1946 and 1947 model years. These models were held over into the early part of 1947, with the new Advance-Design trucks being introduced around March to May of 1947. General Motors literature always referred to these trucks as 1946 model year trucks.
