Stamps of China - Hopei, 30c denom
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postage
1941 1941b issue ovpted on stamp of China - martyrs (1932) unwmk (no perf info)
| - | 30c | brnvio | ovpt, Liao Zhong-kei | — | — |
1941 1941d issue
| - | 30c | — | — |
1941 1941f martyrs issue wmk. yu
| - | 30c | — | — |
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