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| Thumb | Certification Number | Certification Date | Catalog Number | Country | Year | Denomination | Color | Grade | Description | Opinion | PSE Link |
 | 1208137 | 9/9/2009 | K1 | USA | 1919 | 2c on 1c | Green | Ungraded | Used | it is a genuine used, horizontal pair, with a black Shanghai Postal Agency duplex cancel and a natural straight edge at the right. |
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 | 1309440 | 12/10/2015 | K1 | USA | 1919 | 2c on 1c | Green | XF 90J | Mint OGph | it is genuine unused, o.g., previously hinged. |
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 | 1310915 | 1/20/2016 | K1 | USA | 1919 | 2c on 1c | Green | Superb 98 | Used | it is genuine used. |
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 | 1371298 | 1/14/2020 | K1 | USA | 1919 | 2c on 1c | Green | VF-XF 85 | Mint OGnh | it is genuine unused, o.g., never hinged. |
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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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 | 1239435 | 8/2/2011 | K1 | USA | 1919 | 2c on 1c | Green | Superb 98 | Mint OGph | it is genuine unused, o.g., previously hinged. |
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