SCOTT #1193 PROJECT MERCURY "FRIENDSHIP CAPSULE 7"

    The Project Mercury stamp was printed and distributed to 305 Post Offices in sealed pouches, long before John Glenn even left on his historic flight. On his safe return, February 20, 1962, at 3:30 p.m. . Postal headquarters ordered the pouches be opened. Within 1 1/2 hours, many offices sold out their entire stock.