Watch List notes:

(g) NGC MS63 | The Mašek Collection of Czech and European Gold Coins | Czechoslovakia, First Republic (1918-1939), Ducat, 1928, Kremnitz, St. Wenceslas standing facing, rev. rampant Czech Lion in Slovak shield, edge milled, 3.48g, 12h (Fb. 2; M&CH CSR1D-005; Valovic CSD2; Novotný 16; Schlum. 24; KM 8), stained but lustrous and subsequently conserved by NGC, a bold extremely fine, a popular and sought after type, especially for this scarcer date of issue with only 18,292 struck, in NGC holder, graded MS63 (Cert. #6135187-008)

Provenance
The Mašek Collection of Czech and European Gold Coins