Our View: $1 coin program a chance to highlight innovative Mainers The U.S. Mint asks, what is Maine's greatest scientific contribution? By The Editorial Board What is Maine’s greatest gift to the world? That’s the question being asked as part of the American Innovation $1 Coin Program, announced last week by the Office of the State Treasurer. Beginning in 2019 and running through 2032, the U.S. Mint is issuing $1 coins for each state and territory, as well as Washington, D.C. Each will feature a “state-specific innovation and/or innovator in the field of science, its impact and connection to the state.” Maine’s will come in 2024.