Manufacturer: Механический завод и Техническая контора К. Зигеля
1887–1901
Upper Cartouche: Stamped inside an elongated oval tab with К. ЗИГЕЛЬ (K. Siegel).
Lower Cartouche: Stamped inside a matching oval tab with С.П.Б., the pre-revolutionary imperial abbreviation for Санкт-Петербург (Saint Petersburg).
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