This Art Craft First Day Cover features the 1963 15¢ Montgomery Blair U.S. airmail stamp issued to mark the 100th anniversary of the first International Postal Conference. The block of four stamps is tied by a clear Silver Spring, Maryland postmark dated May 3, 1963—the official first day of issue.
Montgomery Blair served as Postmaster General under President Abraham Lincoln and played a pivotal role in convening the 1863 Paris conference that laid the groundwork for what became the Universal Postal Union. His efforts helped standardize international mail exchange at a time when global communication was rapidly expanding.
The cachet depicts a distinguished portrait of Blair (1813–1883) along with the symbolic Art Craft rendering of the Universal Postal Union emblem, adding strong visual appeal for collectors of postal history and U.S. airmail issues.
A fine addition to any collection of Art Craft cachets, Lincoln-era figures, or worldwide postal union topicals, this cover displays fresh color and a crisp first-day cancel.
