M-69 Incendiary cluster bomb

The M69 incendiary bomblet was used in air raids on Japan and China during World War II, including the firebombing of Tokyo in 1945. It was created by the Standard Oil Development Company, whose work was funded by the Office of Scientific Research and Development. They were nicknamed "Tokyo calling cards". The M69 was a plain steel pipe with a hexagonal cross section 3 inches (76 mm) in diameter and 20 inches (510 mm) long. It weighed about 6 pounds (2.7 kg).

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Frameless

M69 6-pound Napalm Incendiary Bomb, Niigata Prefectural Museum of History

Type	Subtype	Date	Description	Notes	Source
commons	image		M69 6-pound Napalm Incendiary Bomb, Niigata Prefectural Museum of History		Commons