A Green safety plug and a red arming plug from L-11, "Little Boy", the First Atomic Bomb dropped on Japan.. Each plug made of composite metal and wood, 3 inches long and 1 inch in diameter, each housed in a custom shadow box with original annotated inspection tags mounted on the reverse. The label for the red plug an inspection card for L-11 signed and dated 7/31/45, and the card for the green plug a written statement signed by both Doll ans Jeppson.