Watch List notes:

(g) MS62 | The Mašek Collection of Czech and European Gold Coins | Austro-Hungary, Franz-Josef I (1848-1916), Ducat, 1904, Vienna, laureate head right, rev. Imperial double-headed eagle, 3.50g, 12h, edge milled (Fb. 493; Herinek 173; J.344; Rie. 06.03), stained with the odd surface mark and subsequently conserved by NGC, otherwise lustrous, extremely fine, in NGC holder, graded MS62 (Cert. #6135286-016)

Provenance
The Mašek Collection of Czech and European Gold Coins