I have a 46 Burb with clamshell door. If I recall the made about 50 of them compared to about 1900 with barn doors. You have a rare one.
Maybe I am reading incorrectly the
the numbers for 1946 suburbans (pre and post strike) at Brads site - the link posted by squeeze?
2545 1946 model 3116 Suburbans with Half Rear Doors and End-Gate ("clamshell" - end-gate rear doors
1644 1946 model 3106 Suburbans with Full Rear Doors doors ("barn doors" - rear doors)
Compared to pickups (and to later Suburbans), the 1946 Suburbans are much rarer.
However, relatively speaking, in 1946, the end-gate Suburban appears to be less rare than the rear door Suburban?
Nice Suburban, Russ.