CK's are considered '46 models. And if the truck is one of the first 1000, that just adds to the case. The military used trucks from Dodge, Chevrolet, Ford and Studebaker during the war and there are 1944 and 1945 models out there from all four.
In this case, you have an early '46 that was titled as a '45 due to the sale date. Some states even titled vehicles using engine numbers instead of the serial number. Every state was different and nothing was standardized. Many of these odd rules carried on into the 1960's until serial number locations were federally standardized.
