Watch List notes:

The Oksana Bennett Collection of Russian Coins | Nicholas I Pavlovich (1825-1855), Pattern 2-Kopeks, 1830-CNB, St. Petersburg, crowned double-headed eagle, rev. value, signature below, edge plain, 9.02g, 12h (Uzd. 3284; Diakov 80; Bitkin 925), residual mint red in recesses, otherwise extremely fine, extremely rare, one of only 25 struck

provenance
Spink 168, 26-27 September 2006, lot 1202