Attribution of this badge is presumed. Exact name (and purpose) is unknown for today.
Silver, enamel.
Size 34.8 х 32.7 mm.
Circa 1919-1921.
Marked with St.Petersburg assay office hallmark that was used between 1908 and 1927.
Smaller silver hallmark and (the most interesting one) "hammer...
1-ая государственная фабрика золотых изделий
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знак 1-й государственной фабрики золотых изделий
клеймо 1-й государственной фабрики золотых изделий