The bottom of the ashtray of the composite artillery shells

Composite artillery shells was a brass bottom with capsule socket is inserted into the cheaper thin glass (usually black metal). The bottom could be used repeatedly. The ownership of the object is not defined, however, judging by the shape of nests for a special key on the capsule, and it is clearly domestic (Russian or Soviet) origin. Was used as ashtrays. Diameter 130 mm Guarantee of authenticity.