Watch List notes:

Elizabeth (1741-1762), novodel proof kopeck, 1757, Ekaterinburg mint, edge obliquely grained, 17.66g (Bitkin H529 R2; Diakov 476), two small patches of discoloration on reverse, otherwise extremely fine Ex NASCA auction (Chicago), 19-21 March 1982, lot 1410.
Estimate: 400-600 GBP