Sándor (Polish: Aleksander Jagiellończyk) was born on August 5, 1461 in Krakow. He was the Grand Duke of Lithuania from 1492, then the King of Poland from 1501 until his death. He lived as a member of the Jagiellonian house. His father IV. Casimir was King of Poland, and his mother was Elizabeth of Habsburg. In 1492, he was elected Grand Duke of the Lithuanian Order, and after the death of his brother, John Albert I, he inherited the Polish throne on June 17, 1501. Alexander fought hopelessly to limit the growing power of the Polish nobility and the Senate, as well as privileges and control over the treasury. to regain control. In 1505, under pressure from the Polish orders, the parliament meeting in Radom issued a constitution in which he made great concessions to the Polish nobility at the expense of serfdom. The Sejm proclaimed the Nihil novi constitution, with which they achieved that the king could only make decisions with the consent of the Sejm. The Łaski Statute (Statut Łaski), the first unified collection of laws of the Polish state, was also issued here. Due to a lack of money, Alexander was unable to help the Order of the Sword Brothers against Russian aggression, when his father-in-law III. Grand Duke Ivan of Moscow ravaged Lithuania with Tatar auxiliaries. The Polish king could only strengthen the garrisons of border towns, including Smolensk. Poland only III. Due to the death of Moldavian prince István, he was able to keep his endangered Black Sea territories. Sándor strengthened the traditional trade relations with Hungary, especially the import of Tokaj wine and many raw materials through the city of Biecz. In addition, he also fought with the Teutonic Knights in the northern areas, for this II. He received financial help from Pope Gyula. The Polish king died in Vilnius on August 19, 1506, at the age of only 45. He did not have an heir from his marriage, and his widow, Queen Helána, retired to Vilnius, where she also died on January 20, 1513.

The Polish king Alexander I (Jagielló) ruled from 1501 to 1506. During this period, the Polish mint consisted of the following coins. The złoty was the official currency of the Kingdom of Poland from the 16th century to the beginning of the 20th century. During the time of King Alexander, the złoty was made of gold and silver. The weight of the gold złoty (złoty polski) was 3.544 grams, and the weight of the silver złoty (złoty litewski) was 28.28 grams. The groszy was the smaller value coin of the Kingdom. In the time of King Alexander, the groszy was made of silver, weighed 2.32 grams, and 30 groszy made up one złoty. The denar is the smallest value coin of the Kingdom of Poland. In the time of King Alexander, the denar was made of bronze, weighed 0.62 grams, and 20 denars made up a groszy. In the time of King Alexander, new coins also appeared. Such was, for example, the 8-groszy coin, which was used to replace the previous 4-groszy coins. King Alexander's coinage contributed to the stability and development of the Polish monetary system.