Stamps of China, PRC, China and World Expo issue
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postage
2009, May 1 China and World Expo issue unwmk (no perf info)
| - | 1.20y | multi | China at earlier Expos | |||
| - | 1.20y | multi | China at recent Expos | |||
| - | 1.20y | multi | 1999 World Horticultural Expo Kunming | |||
| - | 1.20y | multi | World Expo 2010 Shanghai |
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