Macrinus aureus - $288k

Roman emperor Macrinus reigned for about a year, from 217 to 218, before falling victim to assassination, a fate he shared with many of his peers. One of three known gold aureus coins of the type for Macrinus was a highlight of a Heritage auction in 2019. At the same sale a Diadumenian aureus made $336k

AV aureus. NGC Choice AU ★ 5/5 - 5/5, Fine Style. Rome, AD 218. $288k

Macrinus proclaimed himself emperor without confirmation from the Senate in Rome. This and reigning in soldiers’ pay made him very unpopular. Veteran soldiers revolted.

Diadumenian, as Caesar (AD 217-218). AV aureus. NGC Choice AU ★ 5/5 - 4/5, Fine Style. Rome, AD 218. $ 336k

Marcus Opellius Diadumenian, ten-year-old son of emperor Macrinus (AD 217-218), was granted the rank of Caesar soon after his father had succeeded the murdered Caracalla. Coinage in his name was struck in all denominations, though his gold is extremely rare. Diadumenian was captured and executed in late June 218.