From 1947-1955 (all Advance-Design models), the 1/2 ton panel body trucks used the same front and rear bumper. This bumper was the same as the front bumper on other 1/2 ton trucks from 47-55.
On 47-55 1/2 ton pickup trucks, the front and rear bumpers were different. The same rear bumper was used on pickup trucks from 1947 through 1953; but, the 54/55 1/2 ton rear bumper was different from the bumper used in earlier years.