Set of 2 First Day Covers. APS. American Philatelic Society Cachet. 41st Winter Meeting, Orlando, Florida, February 25-28, 1999 Americas 99. One cover has an official USPS first day of issue cancellation, February 25, 1999, Orlando, Florida, the other an APS pictorial first day cancellation, February 25, 1999, Americas 99 Station, American Philatelic Society 41st Winter Meeting, Orlando, Florida of #3277 33c Flag Over City definitive stamp. The City Flag stamp was dedicated in a ceremony held in conjunction with the Americas 99 APS meeting. Each cover measures 3 5/8" x 6 1/2".