Flown commemorative cover with a cachet honoring the 25th anniversary of Martin’s Newport Harbor flight, signed in black ink vertically along the cachet by Martin, “Glenn L. Martin.” In fine condition, with a handwritten address to lower right corner and an owner’s signature along bottom edge. RR Auction COA.
We use cookies on this site to improve your experience. By using this site, you accept our use of cookies. To learn more, please see our Privacy Policy.