Manufacturer: Механический Завод И Техническая Контора К. Зигеля
1887–1901
Upper Arched Cartouche: Stamped with the founder’s name К. ЗИГЕЛЬ (K. Siegel).
Lower Cartouche: Stamped with С.П.Б., the imperial abbreviation for Санкт-Петербург (Saint Petersburg).
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