The listing, 1977 13c Butterflies Stamps Mint- Catalog # 1712-15 has ended.
Issued as a set of four, the 1977 stamps pictures the Swallowtail, Checkerspot, Dogface and Orange-Tip butterflies. Each butterfly represents a different geographic region of the United States. Block of four is in mint or unused condition, however there is a hinge mark on stamp 1 and stamp 4 so this would be a great filler or start to a stamp collection for collectors of all ages!