Description
- Scott Catalog # : 3077 - 3080 / Mystic First Day Cover.
- Set includes: 3077 Eohippus / 3078 Woolly Mammoth / 3079 Mastodon and 3080 Saber-Toothed Cat.
- Have description of the stamp subject printed on the back.
- ARE IN MINT, UNADDRESSED CONDITION.