Printed cachet commemorating the 50th anniversary of the first airmail flight by Earle L. Ovington, with purple aircraft vignette and typed address to Paul Gapp, Park Forest, Ill. Front bears a circular Garden City, N.Y. cancel dated Sep 23, 1961; back has New York machine cancellation and "Airport Mail Facility / La Guardia" marking. Red US airmail stamp is tied by the front cancel. No publisher imprint is visible on the images
Notes for Cover Collectors: • High-resolution scans of front and back are provided; use zoom to inspect postmarks, cachet details, and backstamps. • No third-party grading; condition is shown in the images.