They are not the same for the two different series. The Art Deco trucks used at least one style and the AD series used two different styles. 1947/1950 and 1951-1955.
Let's see if we can get someone to post a picture of their hinges so we can see the differences.
1941/1947 hinge not the best detail. but I can definitely see the difference between the AD and the art deco series.
EXPLODED VIEW OF CLAMSHELL DOORS 1941/1946
