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| Thumb | Certification Number | Certification Date | Catalog Number | Country | Year | Denomination | Color | Grade | Description | Opinion | PSE Link |
 | 1205701 | 7/27/2009 | K1 | USA | 1919 | 2c on 1c | Green | XF 90J | Used | it is genuine used, with a black Shanghai, China duplex cancel. |
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 | 1234916 | 4/11/2011 | K1 | USA | 1919 | 2c on 1c | Green | Ungraded | Mint OGnh | it is a genuine unused, o.g., never hinged, botom margin block of six (3X2) with Plate No. 8431 below the lower left stamp. |
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 | 1293439 | 11/19/2014 | K1 | USA | 1919 | 2c on 1c | Green | XF-Sup 95 | Mint OGnh | it is genuine unused, o.g., never hinged. |
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 | 1372637 | 6/22/2020 | K1 | USA | 1919 | 2c on 1c | Green | Ungraded | Used | it is a genuine usage of two singles tied on cover by a U.S. POS. SERVICE SHANGHAI, CHINA duplex cancel dated Jul 5 1919. |
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 | 1372650 | 3/2/2020 | K1 | USA | 1919 | 2c on 1c | Green | VF-XF 85 | Used | it is genuine used, with roller cancel. |
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 | 1400658 | 10/18/2021 | K1 | USA | 1919 | 2c on 1c | Green | XF 90 | Mint OGnh | it is genuine unused, o.g., never hinged. |
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