Jagiellonians, Sigismund I the Old (1507-1548), Prussian denarius, mint Torun
Denarius with a small letter S under a narrow crown, minted for Sigismund I the Old at the Torun mint.
This type of coin, according to an article by Gregory Romanczyk, was minted in 1528.
A variant that appears less frequently on the numismatic market.
