Medal by Fryderyk Loos, minted for the inauguration of the Four-Year Sejm. Under his act of 1789, the Prussian King Frederick William II made a promise to provide Poniatowski with a 100,000-strong army to defend against Catherine II's army.
Medal offered to the king and marshals of the confederated Sejm by the Prussian king Frederick William II.
Obverse: a statue of King Sobieski on a horse, such as the one standing in Łazienki Park in Warsaw, a Turk lying under the horse's feet, on both sides shields and victorious signs, on the left shield: JOHANNI III RPMDL PATRIAE SOCIORUMQUE DEFENSORI MDCLXXXVI NOBIS EREPTO SAR MDCCLXXXVIII III King of Poland, Grand Duke of Lithuania, homeland and allied defenders, torn away in 1686, King Stanisław August in 1788), on the second shield a Polish inscription: Jan III KPWXL Oyczyzny i Sociuszów obroncy, whom we lost 1696 SAK 1788, in the section CONCORD COMIT CONVOC MDCCLXXXVIII (Assent to the Assembly of 1788)
PRISCA VIRTUTE FELIX (Happy Through Former Valor)
Reverse: The genius of the Polish kingdom, in the form of a woman, holding a drawn sword and a shield with Polish and Lithuanian coats of arms, a pile of weapons at his feet, in the section AUCTO EXERCITU MDCCLXXXIX (For the multiplication of the army 1789), on the edge of the base the name of the mint master D. LOOS
PROPRIO MARTE TUTA (Safe with her own weapons)
Diameter 51 mm, weight 58.37 g