Watch List notes:

(g) The Mašek Collection of Czech and European Gold Coins | Russia, Alexander I (1825-1855), Imitation Trade Ducat, 1837, St. Petersburg, armoured figure standing right, holding clutch of arrows, date below, rev. text in cartouche, edge obliquely milled, 3.38g, 12h (Bitkin 39; Schlum. -; Fb. 161), brushed but lustrous with peripheral staining and subsequently conserved by NGC, very fine, very rare, in NGC holder, graded AU Details, Removed from Jewellery (Cert. #6135190-003)

Provenance
The Mašek Collection of Czech and European Gold Coins