Auto Dollar|
| Value | One yuan (壹圆/壹圓) |
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| Mass | 25.80 g |
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| Diameter | 39 mm |
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| Shape | Round |
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| Composition | Silver |
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| Years of minting | ROC 17 (1928) |
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| Mintage | 648,000 |
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| Design | Zhou Xicheng's car driving on a road, with grass along the front arranged to spell his personal name |
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| Design | Chinese text surrounding a central flower motif |
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The Auto Dollar (Chinese: 汽車錢; lit. 'Automobile coin', also known as 贵州汽车币; 'Guizhou car coin' or Kweichow Auto Dollar in English) is a silver one yuan coin minted by Chinese warlord Zhou Xicheng in 1928 to commemorate the construction of roadways in Guizhou province. The obverse of the coin features an automobile driving along a road, flanked by grass arranged to spell out Zhou's personal name, Xicheng (西成).
Zhou rose to power in Guizhou in 1927, during the political and military upheaval of the Warlord Era. He had acquired the rural province's first known automobile, oversaw the construction of roadways across the region, and saw the foundation of a mint and arsenal in Guiyang. Unlike other Chinese warlords, he never commissioned coinage featuring his image. Although some sources described Zhou's automobile as a soft-topped model from the Hudson Motor Car Company, the vehicle featured on the coin does not appear to closely correspond to any specific make or model. 648,000 coins of the type were produced at the Guiyang mint. The coin fell out of regular circulation in the early 1930s, partially due to demand from international coin collectors. The Auto Dollar is a rare and heavily counterfeited type; a certified example graded in mint condition sold for US$336,000 at a 2023 auction.