The Butterfly postage stamps were issued in 1977 as part of a set of related and similarly themed stamps that were issued and sold together. The
Butterflies United States Stamps for sale
First Day of Issue Butterflies United States 13 Cent Denomination Stamps for sale
4462/5346 - 2010-19 Butterflies set of 7 - Mystic Stamp Company
Butterfly Stamp Sheet, 50 Stamps, 13 Cent US Postage Stamps, 1977, Dogface, Swallowtail, Orange-tip, Checkerspot
10 Common Buckeye Postage Stamps // UNUSED // 24 Cent Stamp // Neutral – Flourish Fine Writing
Butterfly Postage
4462/5346 - 2010-19 Butterflies set of 7 - Mystic Stamp Company
Butterfly U.S. Postage Stamps, Face Value 13 Cents, 1977
Monarch Butterfly Single 64 Cent Stamp Scott 4462 : Everything Else
1714 - 1977 13c Butterflies: Dogface - Mystic Stamp Company
Butterflies Postage Stamps for sale