The royal mint in Wschowa was reopened in 1650, after a nearly fifty-year break. Regular production of various denominations began at that time, including thalers and gold coins, which were made for the first time, as well as extremely rare copies of the gold six-ducat coins of Zygmunt III, struck at the end of the 16th century. The seven-ducat Wschowa coin, housed in the collections of the Royal Castle in Warsaw, is a coin of this type—a gold coin struck from dies designed for making silver coins (in this case a thaler). It is probably a unique specimen. The obverse of the coin, similarly to other Wschowa coins, distinguishes itself from other Polish numismatic pieces dating from this period due to the very characteristic engraving of the King’s face, who is wearing—in accordance with the accepted canon—ancient armour with a clasp in the shape of a lion’s head and a laurel wreath on his head. A characteristic feature on the reverse is the arrangement of the escutcheon, typical of high-denomination coins, especially thalers. It is divided into five fields and, apart from the Vasa Sheaf (Snopek) in the central field, the Eagle and the Pogoń (Knight)—elements characteristic of lower-denomination coins—it also bears elements of the coat of arms of Sweden: three crowns and the Folkung lion (lion rampant). Below the coat of arms of the Polish-Lithuanian Commonwealth, is the Wieniawa coat of arms of the Deputy Treasurer of the Crown, Bogusław Leszczyński, and the letters MW—the symbol of the Wschowa mint. The requirement to sign the coins with the first letter of the name of the town in which they were minted was introduced by King Zygmunt III in the minting law of 20 July 1599.