Sc. 5282 Airmail Centennial II on a 5"x7" Dragon Card showing two first flight covers for airmail service from Columbus, Ohio, and a photo of the sort of plane used when that service began on August 1, 1928. APS StampShow/ATA National Topical Stamp Show was being held in Columbus on the first-day for this stamp. The stamp is tied by a Columbus round-dater postmark. Great for a postal services-, airmail-, aviation- or airplanes-on-stamps collection!