Gold badges.
Allegedly several dozens of early badges were made with gold (of 56th fineness). The only known for today such ПВ-made badge No.12 with additional engraving "October 12, 1924 [to] N.A .Florolov For Active Work/Н.А.Фролову за активную работу". Note that badge has pin fastening and additional rivets. Marked with "PV/ПВ" mark, Leningrad district assay office mark (alpha, female head in a kokoshnik to the right, 56) and round mark. Unfortunately, the quality of the photographs does not make it possible to confidently judge the originality of the marks.
Allegedly several dozens of early badges were made with gold (of 56th fineness). The only known for today such ПВ-made badge No.12 with additional engraving "October 12, 1924 [to] N.A .Florolov For Active Work/Н.А.Фролову за активную работу". Note that badge has pin fastening and additional rivets. Marked with "PV/ПВ" mark, Leningrad district assay office mark (alpha, female head in a kokoshnik to the right, 56) and round mark. Unfortunately, the quality of the photographs does not make it possible to confidently judge the originality of the marks.