Stamps of Papua New Guinea, sea slugs (1978) design type
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postage
1978, Aug 29 sea slugs (1978) unwmk (no perf info)
| - | 10t | multi | Roboastra arika | .20 | .20 | |
| - | 15t | multi | Chromodoris fidelis | |||
| - | 35t | multi | Flabellina macassarana | |||
| - | 40t | multi | Chromodoris marginata |
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