Please look and inspect all photos. Marked to the underside: "Double-Headed Eagle" for warrant, (part of the Russian Empire at that time); Br.
Buch" for Brothers Buch; "w Warszawie" - English "in Warsaw" number "4 for pattern or manufacturers code. Made by Brothers Buch in Warsaw, Russian Empire, sometime in 1870's.
(part of the Russian Empire at that time, today is Poland). Total Weight: 10.52 oz. Commensurate with age, the condition is very good. Rare for their pattern, makers and overall condition.