INERT DEACTIVATED Rare, Unfired, WW1, 1917 dated German 20mm Becker (20x70 RB) Aircraft Cannon Incendiary Round. - O 1821 INERT DEACTIVATED Rare, Unfired, WW1, 1917 dated German 20mm Becker (20x70 RB) Aircraft Cannon Incendiary Round. - O 1821 Other Ammunition

INERT DEACTIVATED. This is a rare unfired WW1 German Becker 20mm (20x70 RB) aircraft cannon incendiary round. During 1915, German Reinhold Becker developed a 20 mm calibre cannon using the advanced primer ignition blowback method of operation. The gun used a brass cased 20x70 RB cartridge and had a cyclic rate of fire of 300 rpm. The main use of this gun was as an aircraft gun on the Gotha and AEG GIV bombers, the Albatross G1 and on several airships. This round was developed for use against British airships. The Becker round was the forerunner for the Oerlikon 20 mm FF, FFL and FFS series of aircraft cannon rounds used into the Second World War. The unfired brass cartridge case is headstamped P&S 30 Sp61 17 (1917 date). The projectile has a squared off nose identifying it as an incendiary projectile and has a copper driving band. The projectile is stamped round the circumference near the nose M (in a circle) 12 18 (1918 date). The price includes UK delivery and no licence is required to possess this inert round in the UK if retained as part of a collection or display. O 1821