Variety with letter D under the bust of the ruler, mint mark of the Salzburg mint.
Good eye appeal.
Austria, Francis II (1792-1806), Ducat 1806, Salzburg mint
Obverse: bust of the emperor in a wig and laurel wreath, right
FRANCISCVS II D G ROM ET HAER AVST IMP
Reverse: under the crown, the double-headed Imperial Eagle with a shield with the double-headed Imperial Eagle on the chest
GER HVN BOH REX A A-D LOTH VEN SAL 1806
Gold, diameter 21 mm, weight 3.49 g