2020 American Innovation $1 Coin Proof Set
- The 2020 American Innovation $1 Coin Proof Set features four stunning coins celebrating and honoring significant American innovation and pioneering efforts of individuals or groups in Connecticut, Massachusetts, Maryland, and South Carolina.
- Four beautiful proof coins with sharp relief and a mirror-like background with frosted foregrounds, giving them a special cameo effect
- Minted at the U.S. Mint at San Francisco
- Accompanied by a Certificate of Authenticity