Watch List notes:

The Mašek Collection of Czech and European Gold Coins | Austria, Joseph II (1780-1790), ½-Sovrano, 1786 A, Vienna, laureate head right, rev. crowned Imperial double-headed eagle, edge obliquely milled, 3.47g, 6h (Fb. 444; Herinek 101; J.45; KM 35), struck on an irregular flan, with brushed surfaces overlying residually lustrous fields, latterly conserved by NGC, a bolder very fine, in NGC holder, graded UNC Details ~ Cleaned (Cert. #6135289-012)

Provenance
The Mašek Collection of Czech and European Gold Coins