Watch List notes:

(g) The Mašek Collection of Czech and European Gold Coins | Austro-Hungary, Franz-Josef I (1848-1916), Commemorative 100-Corona, 1913, Vienna, bare head right, rev. crowned Imperial double-headed eagle, incuse security edge, 33.96g, 6h (Fb. 507; Frühwald 1921; Herinek 322; Novotný 140; KM 2819), rust stains and surface friction in otherwise brilliant fields and subsequently conserved by NGC, extremely fine, and very scarce with a mintage of 2,696 pieces, in NGC holder, graded Prooflike Details ~ Obverse Spot Removed (Cert. #6135289-017)

Provenance
The Mašek Collection of Czech and European Gold Coins