Badge of the Society of Inventors of the Northern Shipyard/Знак Общества изобретателей Северной верфи (ОИСВ)

Silver, enamel.
Size 34.8 × 26.6 mm.
Weight 14.48 g.

Marked with Leningrad district assay office in a spatula-shaped shield [alpha, worker's head, to the right, 875] and the mark of "Золотосеребреник/Zolotosilerbenik" artel "АЗС/AZS".
Engraved "Цабут /Tsabut/ 19 16/IV 32".

The enamel on the banner is partially restored.