A variety with the ends of the inscriptions PRVS/PRVSS and with a sword to the left of the Eagle.
During the reign of Sigismund the Old, in 1526-1528, perhaps the most important monetary reform in the history of Polish money was carried out. A modern, well-functioning system based on full value coinage - silver and gold - was introduced. The monetary system of Sigismund the Old was represented by denars, ternars, shekels, half-pennies, grosze, troyaks, sixpences, thalers (still medals) and ducats. The king led to the monetary union of the Crown and Royal Prussia. However, the monetary system of the Grand Duchy of Lithuania functioned separately (4 Lithuanian pennies equaled 5 Polish pennies). Sigismund the Old left his mark not only on Polish minting (as King of Poland) and on Lithuanian minting (as Grand Duke of Lithuania). He also left his mark in the minting of Silesia as Duke of Glogow, minting (possibly) halers and (certainly) Glogow groszes in 1505 and 1506.
During the time of Sigismund the Old, the various denominations were issued in two standards: on the Polish foot and on the Lithuanian foot. Crown pennies (for the Polish foot) were minted at the Cracow mint in 1526-1527 and 1545-1548 from 6-ounce sterling silver. They weighed an average of 2.059 grams and contained 0.772 grams of pure silver. Their obverse bore a crown, an inscription in two or three lines and, at the bottom, the coat of arms of the treasurer (initially the Odrowąż of Mikołaj Szydłowiecki, then the Leliwa of Spytek Tarnowski along with his initials). There are also varieties without the treasurer's coat of arms. The reverse bore the White Eagle and an obverse inscription with the date. Prussian and city (Gdańsk, Elbląg) pennies were also minted on the Polish foot. Prussian pennies were issued by the mint in Torun in 1528-1535, with a beautiful Renaissance portrait of the king (in two types) and an otolith inscription on the obverse. On the reverse - an eagle and an otolith inscription with a date. The iconographic scheme of Danzig pennies (1530-1535, 1537-1540, 1548) was similar, with the difference that instead of the Prussian eagle, the coat of arms of Danzig was placed on the reverse. The former collection of Warsaw University included a piece from 1535 minted in pure gold. Elbląg pennies (1533-1535, 1538-1540), on the other hand, had the Prussian eagle on the obverse and the coat of arms of Elbląg on the reverse. Lithuanian pennies (1535, 1536) issued by the Vilnius mint were minted on the Lithuanian foot (sample - VI, average weight - 2.574 g, pure silver content - 0.965 g). Their ratio to the pennies minted for the Polish foot was 4 : 5. On the obverse of the Lithuanian pennies were placed the White Eagle and the otolith inscription (with the king's name). The reverse featured the coat of arms of Lithuania - the Pahonia - and an otolithic inscription, into which Gediminas' columns were embedded at the bottom. The year was in the field of the coin, below the Pahonia. On some varieties, letters indicating the month of coinage were also placed under the coat of arms of Lithuania.
