Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - United States - Zeppelin Flights - 1925 (May 3-10), Airship Los Angeles (Z.R.3) Direct and Return Flights to Puerto Rico, 5 covers, three for direct flight dated by April 27 (addressed to San Juan or Mayaguez) and two for return flight dated by May 6 (sent from San Juan or Mayaguez), appropriate markings and mostly VF, Sieger #20T, U, V, Est. $400-$500