Fifteenth Anniversary of the VChK-GPU. Badge. Engraved: "No. 151". Silver and red and blue enamel. Multipiece construction. Screwback. Oval badge, sword pointed downwards behind, superimposed with a crossed hammer and sickle and red enamel Roman numeral "XV", "B.Ч.K.-Г.П.У." below. Sword hilt flanked by dates "1917-1932). Zak 2.1.4 (C6). Rare, especially with low number. Top piece loose. About Extremely Fine. Estimated Value $750