1999 First Day of Issue Envelopes Qty 20 Mystic Cachet Celebrate the Century

Lot of 20 USPS Stamp First Day of Issue envelopes with cachets by Mystic Stamp Company. All the envelopes are mounted onto loose-leaf sheets that are 3 hole punched for insertion into an album. The stamps are all part of the 1999 Celebrate the Century series. Included stamps are International Style of Architecture, Citizen Kane, Women Support War Effort, GI Bill, Antibiotics Save Lives, US Launches Satellites, Korean War, Cat in the Hat, Drive In Movies, I Love Lucy, Rock N Roll, Stock Car Racing, Movies Go 3D, Polio Vaccine, World Series Rivals, Rocky Marciano, Desegregation, Tail Fins & Chrome, Teen Fashions, & Shot Heard Round the World. No rips or tears noted. See pictures for further details on condition.