A well engineered model 7.5mm Gun the base plate with brass plate engraved 'Model 7.5 Gun Mk. VI C.P.V. Mtg I.P.S. October 1922 (Ordnance Artificers Workshop)' with recoil mechanism, hand wheel, rod and gear operated direction and elevation mechanisms, built up riveted mounting with brass trunnion bearings, the base plate mounted on rollers, finished in green and red (breach not present) -- 23in. (58.5cm.) dia base plate; barrel length -- 34 5/8in. (86cm.)