1852 AD., Russian Empire, Nicolai I, Ekatrinburg mint, 2 Kopeks, KM C 150.1.

Russian Empire, Nicholas I (1825-1855), Ekatrinburg mint, 1852 AD.,
2 Kopeks (28,2 mm / 9,00 g), copper, ? g. theor. mint weight, mintage 6.874.000 , axes medal alignment ↑↑, plain edge,
Obv.: Russian double headed imperial eagle surmounted by a crown, die breaks all fields.
Rev.: + 2 + / КОПҌЙКИ / 1852. / E. M. , value in Cyrillic letters , date and mintmark below, all in wreath.
KM C 150.1 .

Year / Mint Mark / Mintage
1850 EM 2,206,000 C#150.1
1851 EM 8,356,000 C#150.1
1852 EM 6.874.000 C#150.1
1853 EM 7,561,000 C#150.1
1854 EM 4,541,000 C#150.1
1855 EM 8,587,000 C#150.1
1856 EM 9,167,000 C#150.1
1857 EM 3,359,000 C#150.1
1858 EM 10,028,000 C#150.1
1859 EM 14,772,000 C#150.1

also with B.M. mintmark (Warsaw mint, KM C 150.3) and MW mintmark, are listed as Poland G 2563, later issues are listed as KM Y 4.a1 and 4.a2