The truck is an FL3-35 model,and VIN is 9571xxx.I looked closer at it,and think it may actually be a 41 since it has the chrome bars on the lower grilles,which I believe did not return in post war trucks.I see in the Don Bunn hardcover book about Dodge trucks 1918-1996,they show a late 30's 1 1/2 ton pickup with duals,and show a couple 50's dually one ton pickups too.There are a few photos and descriptions of ane and a half tons built in the thirties.This has a frame approximately 8 1/2 feet long behind the cab.The truck also has an exhaust system all the way to the rear,gas filler thru the cab corner to an in frame tank,and an original underslung spare tire carrier under the rear of the frame,along with the full length runningboards. I have read another article by Don Bunn that says that Dodge built One and a half ton pickups in this series from 39-42 only