Obverse: Diademed bust of Marie Louise of Austria as Duchess of Parma, Piacenza and Guastalla left.
Legend: MARIA LUIGIA PRINC. IMP. ARCID. D' AUSTRIA (privy mark) 1815 (privy mark)
Reverse: Crowne coat of arms of the Duchy of Parma, within order collar.
Legend: PER LA GR . DI DIO DUCH. DI PARMA PIAC. E GUAST. (40 . LIRE )
Mintage: 220,000 only
Mint Place: Milan (Italy)
Reference: KM-32, Friedberg 933. R
Weight: 12.89 gram of Gold ( .900)
Diameter: 26 mm
Marie Louise of Austria (12 December 1791 – 17 December 1847) was the second wife of Napoleon I, Emperor of the French and later Duchess of Parma. As such, she was Empress of the French from 1810 to 1814, and subsequently ruler of Parma, Piacenza and Guastalla from 1814 until her death.