WW2 Training Film “The Butterfly Bomb — 4 Pound Fragmentation Bomb (M83)”
United States Navy film #MN-3383A The Butterfly Bomb–4 Pound Fragmentation Bomb (M83).
Training film about the U.S. Navy version of the Luftwaffe “Sprengbombe Dickwandig 2 kg” bomb.
National Archives Identifier:12900 listed as “The Butterfly Bomber 4-LB Fragmentation Bomb”