Your title number appears to be for a 1950 216 engine. You have good papers, so no worries. Now you want to know if the truck is actually a 1950.
In my opinion, since the ID plate is attached to the cab, then the cab should be considered the "truck". One problem with the '47-'50 cabs is that the ID plates are held on by small screws. This makes it easy to switch ID plates without any evidence of doing so.
If the current plate is attached with small screws, then you have a '47-'50 cab. ('51-'55.1 ID plates are held on by rivets, but the holes in the hinge pillar are larger and not threaded.)
If the top of the cowl, behind the hood seal lacks a channel which allows rain water to travel left and right along the top of the cowl, then you have a '47 cab. (The rain channel was added after1947.)
If there is a center rear cab mount and the reinforcement structure to support it inside of the cab, then you have a '47. (A behind the seat gas tank won't fit in a '47.)
If the center headliner bow is screwed on, and there is no center rear cab mount, then you have a '48 to early '49 cab.
If the center headliner bow is free floating, then you have either a late '49 or a '50 cab.
I do not know how to differentiate between a late '49 and a '50 cab.
Carl
