Stamps of North Korea, 20 Feb 1991
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postage
1991, Feb 20 Mountain Butterflies issue - Mountain Butterflies unwmk p. 13.5 (6 stamps)
| - | 10ch | multi | Clossiana angarensis | .20 | .20 | |
| - | 20ch | multi | Erebia embla | .20 | ||
| - | 30ch | multi | Nymphalis antiopa | |||
| - | 40ch | multi | Polygonia c-album | |||
| - | 50ch | multi | Colias erate | |||
| - | 60ch | multi | Thecla betulae |
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