Air mail envelope, 6.5 x 3.75, with stamps honoring the 4th U. S. manned flight and the Mexican Project Mercury station director, signed vertically along the left edge in blue ink, “Gus Grissom”; and an FDC, 6.5 x 3.75, with a cachet honoring John Glenn’s White House visit, signed along the top in black felt tip, “J. H. Glenn, Jr.” In fine condition. R&R COA.
