Sacagawea dollar
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The Sacagawea dollar is a United States dollar coin introduced in 2000, but subsequently minted only for niche circulation from 2002 onward. The coin generally failed to meet consumer and business demands. It is still generally accepted in circulation.
Delaware Representative Michael Castle, who preferred the more popular Statue of Liberty design to the Sacagawea for the dollar coin.
2009 reverse by Norman Nemeth honors the spread of Three Sisters Agriculture
2018 reverse by Michael Gaudioso featuring Jim Thorpe
Susan B. Anthony dollar
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The Susan B. Anthony dollar is a United States dollar coin minted from 1979 to 1981 when production was suspended due to poor public acceptance, and then again in 1999. Intended as a replacement for the larger Eisenhower dollar, the new smaller one-dollar coin went through testing of several shapes and compositions, but all were opposed by the vending machine industry, a powerful lobby affecting coin legislation. Finally, a round planchet with an eleven-sided inner border was chosen for the smaller dollar.
Image: 1981 S SBA$ Type Two Deep Cameo
The similarity in size and material composition between the new Susan B. Anthony dollar (left) and the Washington quarter (right) caused immediate confusion in transactions.
After passage of the United States $1 Coin Act of 1997, the Mint struck pattern coins, depicting Martha Washington and dated 1759, to test a more distinctive, gold-colored coin.