Your truck may actually be a '42, rather than a '41. Some states used to title the vehicle based on what year it was sold, rather than what model year the vehicle really was. With most manufacturers putting the next years model out usually between late August to early December, it's entirely possible for a '42 to get registered as a '41 if it was sold prior to the calender year change. It shouldn't make much difference in this case, as the '42 was essentially a carryover of the '41.
