Russia, Russian Empire. Tzar Nikolai/Nicholas I AE 1/4 Kopeck Cerebrum [Polushka]. (2.22g; 15.6mm). O./ Crowned Monogram of Nicholas I. R./ 1/4 КОПѢЙКИ СЕРЕБРОМЪ 1842. Е.М. Ekaterinburg Mint. C#142.1 $26