1840 AD., Russian Empire, Nicholas I, Ekaterinburg mint, ½ Kopek, KM C 143.1.

Russia, Russian Empire (1721 - 1917), Nicholas I (1825-1855), Ekatrinburg mint, 1840 AD.,
½ Kopek (21 mm / 4,41 g), copper, 5,12 g. (?) theor. mint weight, mintage 10.999.000 , medal alignment ↑↑, plain edge,
Obv.: Н / I , Н -monogram (the Cyrillic "N") surmounted by a crown, within it the letter-numeral I.
Rev.: 1/2 / KOΠҌЙKИ / CEPEБPOMЪ / 1840 / E. M. , value, year and mint mark.
KM C 143.1 .

Year / Mint Mark / Mintage
1839 / ? / ?
1840 СПМ 6,400,000 KM C 143.3
1840 EM 10,999,000 KM C143.1
1841 СПМ 6,400,000 KM C 143.3
1842 СПМ 12,800,000 KM C 143.3
1843 / ? / ?
1844 / ? / ?
1845 / ? / ?
1846 / ? / ?
1847 / ? / ?
1848 / ? / ?