2022 United States Mint Proof Set 10 coins. The 2022 United States Mint Proof Set® contains 10 beautiful proof coins, each bearing the “S” mint mark of the United States Mint at San Francisco. It’s the perfect gift for special achievements, promotions, graduations and more!The 2022 Proof Set features the five American Women Quarters™ Program coins with proof finishes honoring:Maya Angelou – celebrated writer, performer, and social activistDr. Sally Ride – physicist and first American woman in spaceWilma Mankiller – first woman to be principal chief of the Cherokee NationNina Otero-Warren – a leader in New Mexico’s suffrage movementAnna May Wong – first Chinese American woman to be a Hollywood film star, director, and producerEach set is accompanied by a certificate of authenticity