Stamps of Aden - Kathiri State of Seiyun, USA Pavilion at EXPO 67 design
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postage
1967, Oct 12 EXPO 67 World's Fair, Montreal issue unwmk
| - | 150f | multi | USA Pavilion at EXPO 67, p. 12.5x11.5 | — | — | |
| - | 150f | multi | USA Pavilion at EXPO 67, imperf | — | — |
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