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- The United States Sesquicentennial coin issue consisted of a commemorative half dollar and quarter eagle (gold $2.50 piece) struck in 1926 at the Philadelphia Mint for the 150th anniversary of American independence. The obverse of the half dollar features portraits of the first president, George Washington, and the president in 1926, Calvin Coolidge, making it the only American coin to depict a president in his lifetime. By the March 1925 Act of Congress, by which the National Sesquicentennial Exhibition Commission was chartered, Congress also allowed it to purchase 1,000,000 specially designed half dollars and 200,000 quarter eagles, which could be sold to the public at a premium. The Commission had trouble agreeing on a design with Mint Chief Engraver John R. Sinnock, and asked Philadelphia attorney, arts patron and numismatist John Frederick Lewis (1860–1932) to submit sketches. These were adapted by Sinnock, without giving credit to Lewis, whose involvement would not be generally known for forty years. Both the quarter eagle, designed by Sinnock, and the half dollar were struck in the maximum number authorized, but many were returned to the Mint for melting when they failed to sell. The Liberty Bell reverse for the half dollar was later reused by Sinnock, again without giving Lewis credit, on the Chief Engraver's Franklin half dollar, which was first minted in 1948. (en)
- 美国150周年纪念币（英語：United States Sesquicentennial coin issue）包括美国铸币局于1926年生产的两种纪念硬币，一种是银质半美元，另一种则是金质，旨在纪念美国独立、即独立宣言签署150周年。半美元正面刻有首任美国总统乔治·华盛顿和1926年的美国总统卡尔文·柯立芝的头像，成为首枚刻有在世总统的美国硬币。 1925年3月，联邦国会通过法案设立建国150周年世界博览会组委会，并授权该组委会以面值购买特别制作的100万枚半美元银币和20万枚2.5美元鹰金币，将之作为纪念品向公众出售来为博览会筹资。因无法同铸币局首席雕刻师约翰·R·辛诺克在设计上达成一致，组委会邀请费城画家约翰·弗雷德里克·刘易斯操刀。辛诺克采纳了刘易斯的设计方案，但后者的贡献却在长达40年里不为公众所知。 两种纪念币均由辛诺克设计，并且铸币局的产量都达到国会授权数，但大部分硬币都因未能售出而只能送回铸币局熔毁。辛诺克之后在设计富兰克林半美元时再度采用半美元纪念币背面的自由钟设计，但尚未看到新币面世便已辞世。 (zh)
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- Sesquicentennial half dollar (en)
- Sesquicentennial quarter eagle (en)
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- Sinnock's later Franklin half dollar reproduces the Liberty Bell from the commemorative half; his Roosevelt dime evokes the torch from the quarter eagle. (en)
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- Dime Reverse 13.png (en)
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- None. All pieces struck at Philadelphia Mint without mint mark. (en)
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- Jugate heads of George Washington and Calvin Coolidge (en)
- Liberty, bearing a scroll representing the United States Declaration of Independence and a torch (en)
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- The Liberty Bell (en)
- Independence Hall, with a rising Sun behind it (en)
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- John R. Sinnock (en)
- Modeled by John R. Sinnock from designs by John Frederick Lewis (en)
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- 美国150周年纪念币（英語：United States Sesquicentennial coin issue）包括美国铸币局于1926年生产的两种纪念硬币，一种是银质半美元，另一种则是金质，旨在纪念美国独立、即独立宣言签署150周年。半美元正面刻有首任美国总统乔治·华盛顿和1926年的美国总统卡尔文·柯立芝的头像，成为首枚刻有在世总统的美国硬币。 1925年3月，联邦国会通过法案设立建国150周年世界博览会组委会，并授权该组委会以面值购买特别制作的100万枚半美元银币和20万枚2.5美元鹰金币，将之作为纪念品向公众出售来为博览会筹资。因无法同铸币局首席雕刻师约翰·R·辛诺克在设计上达成一致，组委会邀请费城画家约翰·弗雷德里克·刘易斯操刀。辛诺克采纳了刘易斯的设计方案，但后者的贡献却在长达40年里不为公众所知。 两种纪念币均由辛诺克设计，并且铸币局的产量都达到国会授权数，但大部分硬币都因未能售出而只能送回铸币局熔毁。辛诺克之后在设计富兰克林半美元时再度采用半美元纪念币背面的自由钟设计，但尚未看到新币面世便已辞世。 (zh)
- The United States Sesquicentennial coin issue consisted of a commemorative half dollar and quarter eagle (gold $2.50 piece) struck in 1926 at the Philadelphia Mint for the 150th anniversary of American independence. The obverse of the half dollar features portraits of the first president, George Washington, and the president in 1926, Calvin Coolidge, making it the only American coin to depict a president in his lifetime. (en)
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- United States Sesquicentennial coinage (en)
- 美国150周年纪念币 (zh)
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