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Butterfly Postage
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Butterfly Stamp Sheet, 50 Stamps, 13 Cent US Postage Stamps, 1977, Dogface, Swallowtail, Orange-tip, Checkerspot
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1714 - 1977 13c Butterflies: Dogface - Mystic Stamp Company
Graf Zeppelin Stamp Sheet 50 Cent Us Postage
Checkerspot - Finland
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Butterfly Stamp Sheet, 50 Stamps, 13 Cent US Postage Stamps, 1977, Dogface, Swallowtail, Orange-tip, Checkerspot
Poland's Millennuim Sheet of 50 US Postage Stamps 1966 - Ireland