Scott Catalog # : 3910a - l / Mystic First Day Covers.
Set Includes: 3910a Guggenheim Museum / 3910b Chrysler Building / 3910c Vanna Venturi House / 3910d TWA Terminal / 3910e Walt Disney Concert...
Scott Catalog # : 3136a-o / Artmaster First Day Cover.
Very Rare and Hard to Find Set because the last first covers includes the header strip!
Set Includes: 3136a Ceratosaurus / 3136b...