NGC MS 64+ (6638000-003).
Av. NAPOLEON III EMPEROR. Bare head right, below (different) BARRE (different).
Rv. FRENCH EMPIRE. Within a crown closed by two branches: 20 FRANCS and (date), in exergue (workshop).
G.1061 - F.531 - Fr.584 ; Gold - 6,45 g - 21 mm - 6 h