Two US first flight covers for the first flight of Airmail Route 31 between San Francisco and Atlanta, one postmarked Atlanta on the front and San Francisco on the back, the other postmarked San Francisco on the front and Atlanta on the back. Both covers are addressed and have corner bumps. Both stamps are #C76 first man on the moon.

Most items under $20 ship in a first-class envelope with collectible stamps and with card stock  and, for loose stamps, glassine for protection; more expensive or heavier items may go Ground Advantage or Priority Mail. 

Check out my store for stamps, postal stationery, and covers (first day, space, flight, and more) from the US and worldwide! Most inventory comes from my historian dad's 65-year collection. He specialized in the US, Nepal, and mountain climbing but collected from all continents.