40 Francs - Napoléon I

The An XIII 40 francs sits at the precise hinge between the Consulate and the Empire. Napoleon was proclaimed Emperor in May 1804, but the Gregorian calendar was only restored in January 1806 — meaning this coin circulated under a republican dating system while serving an imperial regime. The Germinal franc itself had been established by law in 1803, fixing the gold standard that would anchor French coinage for over a century.

Paris production in Year XIII was substantial, but many pieces were melted during subsequent monetary reforms. The F#537 designation covers both the An XII and An XIII issues; collectors distinguish them by the date on the coin itself, not the catalog number.