HM US Innov.Dollar 20 Mississippi 2023 D

• The 20th issue in the series of dollar coins dedicated to American inventors and innovations: the American Innovation $1 Coins. Four issues are published each year.

• The theme is the first successful lung transplant, in 1963.

• The surgery took place at the University Medical Center in Jackson, Mississippi.

• The coin is minted by the Denver Mint, mintmark D (in edge lettering).