Troer
Troer is a historical term that refers to a type of medieval coinage. Specifically, it denotes a silver coin that was in circulation in various parts of Europe, particularly in the Holy Roman Empire, during the late Middle Ages and the early Renaissance. The name "Troer" is believed to derive from the city of Trier, now in Germany, which was a significant trading center and minting authority in the region.
These coins typically featured an image of the ruling emperor or a religious symbol on one side