Russian Empire Ruble - Constantine, 1825

1 Rouble from Russian Empire. Issued in 1825. Struck in Silver (.868). Measures 35.5 mm and weighs 20.73 g.

Obverse

Portrait of Constantine, the brother of emperors Alexander I and Nicholas I, within circle. Genuine Constantine rubles conform to the standard of silver ruble established in 1810: .833 millesimal fineness silver alloy, 35 mm diameter, 20.73 grams gross weight. Pure silver content of the coin is prominently written on the reverse as 4 and 21/96 zolotniks; hallmark is pressed on the edge, in Cyrillic. The actually weighs 20.63 grams, the Historical Museum coin weighs 20.55 grams, but the Smithsonian coin weighs only 18.52 grams. The Schubert rubles without edge lettering weigh 20.75 grams (Schubert ruble), 20.57 grams (Richter ruble) and 20.89 grams (Garschin-Fuchs ruble). The fake Trubetskoy ruble in the Hermitage collection is the heaviest at 21.48 grams. (By God’s grace Constantine I, Emperor and Aurocrator of all Russia)

Reverse

Crowned double-headed eagle within wreath. (Pure Silver 4 zolotniks 21 dolyas (parts)
SPB
Ruble)