File:1920 assay.png
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1920_assay.png (557 × 502 pixels, file size: 167 KB, MIME type: image/png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:20, 30 April 2012 | 557 × 502 (167 KB) | Wehwalt | {{Information |Description ={{en|1=Scan from report of the 1921 US Assay Commission detailing the problems with the 1920-D quarter being struck in too rich silver.}} |Source =Proceedings of the United States Assay Commission, 1921, p. 18. |A... |
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