B-29 Superfortress 1/144 Die Cast Model Bockscar, With "Fatman" 1/72 Scale Nuclear Bomb Bockscar  a B-29 Superfortress in 1/144 scale large diecast replica Dropped the "Fat Man" atomic bomb over Nagasaki on August 9, 1945 "Fat Man" atomic bomb is featured below in 1/72 scale Signature nose art, realistic panel lines, a simulated canopy, rotating propellers 8" long with an 11" wingspan.