Watch List notes:

Alexander II (1855-1881), Pattern 10-Kopeks, 1856, "Warsaw [Brussels Mint], struck in cupro-nickel, bare head right, inside beaded circle, legend surrounds, rev. value and date in wreath, edge plain, 6.88g, 6h (Uzd. 4010 [R3]; Bitkin 608 [R3]), light handling marks, othewise quite brilliant, extremely fine, extremely rare

provenance
Stack's, 18 July 2007, lot 2761