Watch List notes:

Nicholas I (1825-1855), Pattern 2-Kopeks, 1830, St. Petersburg, crowned double-headed eagle, rev. value, signature below, edge plain, 8.90g, 12h (Uzd. 3284; Diakov 80; Bitkin 925), quite brilliant, much as issued, extremely rare, one of only 25 struck

provenance
Spink, Coinex Sale, 6 October 2004, lot 1064 [part]