This is the U.S.A.A.F. Type O-1 .50 caliber ammo box, used on B-17B, B-17F (nose-guns) and on training aircraft; also used on the B-24:
The top is removable for loading (slides to front), and has two positions when in place, carriage (handle on center) and use (top moved forward, center-piece seems to be belt-flow regulator).
H 7.50", W 5.62", D 4.02". Handle: H from top at center, 2-7/16". Diameter: .38". Hanger: .92" W, D 3.20" to center of 'U'-clip (same plane as box face); Matl: .098 steel. Box Matl: steel, zinc-plated, about .030" thickness. Hanger has stamp, a circle .325 diameter with "AN" at top, "D 235" below, seen to right of center rivet.
Packing-box label:
This box was the direct ancestor of the Boeing 15-6999 B-17C/D & F Top Gun ammo-box of 100 rnds capacity.
Regards, John
The top is removable for loading (slides to front), and has two positions when in place, carriage (handle on center) and use (top moved forward, center-piece seems to be belt-flow regulator).
H 7.50", W 5.62", D 4.02". Handle: H from top at center, 2-7/16". Diameter: .38". Hanger: .92" W, D 3.20" to center of 'U'-clip (same plane as box face); Matl: .098 steel. Box Matl: steel, zinc-plated, about .030" thickness. Hanger has stamp, a circle .325 diameter with "AN" at top, "D 235" below, seen to right of center rivet.
Packing-box label:
This box was the direct ancestor of the Boeing 15-6999 B-17C/D & F Top Gun ammo-box of 100 rnds capacity.
Regards, John
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