10 Dollars - Charles III Genghis Khan

The physical proportions here are unusual enough to warrant pause: at 0.31 g of gold spread across a 45 mm planchet, this is among the thinnest gold coins in modern production — a format pioneered largely by the Polish Mint and adopted by several sovereign licensees for collector issues in the 2020s. The resulting disc is fragile enough that handling without the supplied capsule risks permanent distortion.

Genghis Khan died in 1227; the cause remains disputed, with Tangut arrows, a hunting fall, and typhoid all recorded in various chronicles.