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| Thumb | Certification Number | Certification Date | Catalog Number | Country | Year | Denomination | Color | Grade | Description | Opinion | PSE Link |
 | 1199930 | 4/20/2009 | C1 | USA | 1918 | 6c | Orange | XF-Sup 95 | Mint OGph | it is genuine unused, o.g., previously hinged. |
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 | 1224611 | 7/19/2010 | C1 | USA | 1918 | 6c | Orange | VF-XF 85 | Mint OGnh | it is genuine unused, o.g., never hinged. |
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 | 1224612 | 7/19/2010 | C1 | USA | 1918 | 6c | Orange | Ungraded | Mint OGnh | it is genuine unused, o.g., never hinged. |
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 | 1225445 | 8/9/2010 | C1 | USA | 1918 | 6c | Orange | XF 90 | Mint OGnh | it is genuine unused, o.g., never hinged. |
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 | 1225773 | 7/9/2010 | C1 | USA | 1918 | 6c | Orange | Superb 98 | Mint OGnh | it is genuine unused, o.g., never hinged. |
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 | 1226009 | 8/17/2010 | C1 | USA | 1918 | 6c | Orange | XF 90 | Mint OGnh | it is a genuine unused, o.g., never hinged, center line block of four, the lower left stamp with a natural paper inclusion. |
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