Władysław II Jagiełło Denar

This denar from Władysław II Jagiełło's reign features the king's crowned bust on the obverse, a direct nod to his role in forging the Polish-Lithuanian union through marriage and conquest.

It's a small silver piece, typically weighing around 0.8 grams, struck at mints in places like Kraków or possibly Toruń, though exact locations for some issues remain murky due to spotty medieval records. The reverse often shows a cross or shield, reflecting the era's religious shifts as Jagiełło converted Lithuania to Christianity.

Not every denar survived intact; many were clipped or worn down in circulation, turning up in hoards that hint at trade routes. We don't know the precise mintage figures—they weren't tallied back then.

Plenty of myths swirl about these coins being cursed or lucky, but that's just collectors' fancy. If you squint, the design looks like a medieval selfie.