United States. A Type B Air Force B-17 B-24 B-29 Intervalometer visually-hidden round wire pin

round wire pin

The winning design for the merchant ensign was based on the traditional British Red Ensign and featured the Southern Cross and Commonwealth Star

A collection of four miniature stickpins

20mm (w) x 52

(1871-1957)

United States. A Type B Air Force B-17 B-24 B-29 Intervalometer visually-hidden round wire pinManufactured by J. P. Seeburh Corp of Chicago, IL, a Control, Bomb Release, Type B otherwise referred to as a intervalometer, used by US Army Air Forces bombardiers on B 17 and B 29 aircraft to control the spacing interval and number of bombs dropped per train to execute precise bombing patterns, measuring 24 cm (l) x 9 cm (h), near very fine.