Stamps of North Korea, Day of Postal Services and Telecommunications 1977 issue
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postage
1977, Jun 28 Day of Postal Services and Telecommunications 1977 issue unwmk p. 13.5
| - | 2ch | multi | .20 | |||
| - | 10ch | multi | .20 | |||
| - | 30ch | multi | ||||
| - | 40ch | multi |
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