I bought mine (1950 3600) from the original family so it came with the original title. It was purchased by their grandfather who used it at the family mine in Eureka, Utah. It is titled by the engine number AHCA 207 207 and the serial number 5HRB 2XXX.
Truck was then used on the family farm and never registered after 1966 and that plate was still on it when I bought it.
I have stayed in contact and when I finished it I went to show them and take pictures with it.