1843 AD., Russian Empire, Nicholas I, St. Petersburg mint, 1 Kopek, KM C 144.3.

Russia, Russian Empire (1721 - 1917), Nicholas I (1825-1855), St. Petersburg mint, 1843 AD.,
1 Kopek (27 mm / 10,20 g), mintage 11.200.000 ,
Obv.: Н / I , Н -monogram (the Cyrillic "N") surmounted by a crown, within it the letter-numeral I.
Rev.: + 1 + / KOΠҌЙKA / CEPEБPOMЪ / 1840 / C.П.M. , value, year and mint mark.
KM C 144.3 .