Watch List notes:

(g) The Mašek Collection of Czech and European Gold Coins | Czechoslovakia, First Republic (1918-1939), 'Reopening of the Mines of Kremnitz', Commemorative Ducat, 1934, Kremnitz, by Anton Hám, S CIVITATIS REGIS CAROL DE CREMNICA, praying haloed Catherine right in flower shaped frame, circumscription in hexagonal frame, rev. Mining above and below ground, hallmarked .987 and K punch, edge milled, 17.50g, 12h (Fb. 14; M&CH CSR1-MED9; Schlum. 62; Novotný VI.B), traces of adhesive and some light surface marks and subsequently conserved by NGC, otherwise quite brilliant, extremely fine a prized rarity, with only 70 coins struck!, in NGC holder, graded UNC Details ~ Spot Removals (Cert. #6135289-015)

Provenance
The Mašek Collection of Czech and European Gold Coins