An image of the eagle established as the state emblem of the Republic of Poland.

1791 is the year of the introduction of M. W. on ducats minted at the Warsaw Mint. These letters give rise to the today's mint mark - m/w.

Profile of Stanisław August Poniatowski between the lettering "250th Anniversary of the Foundation of the Warsaw Mint".

Stanisław II August (also Stanisław August Poniatowski; 17 January 1732 – 12 February 1798) was the last King and Grand Duke of the Polish–Lithuanian Commonwealth (1764–95). He remains a controversial figure in Polish history. Recognized as a great patron of the arts and sciences and a supporter of progressive reforms, he is also remembered as the last king of the Commonwealth whose election was marred by serious irregularities, and the one who failed to prevent Poland's destruction.

Pro Fide, Lege et Rege (Latin for "For Faith, Law and King") was an 18th-century motto of the Polish-Lithuanian Commonwealth and then of Poland. It superseded the earlier Si Deus Nobiscum quis contra nos (Latin for "If God is with us, then who is against us") and was featured on a variety of buildings, military decorations and equipment.