Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - United States - Zeppelin Flights - 1925 (February 20-21), Airship (Z.R.3) Los Angeles 1st Flight to Bermuda, 2 covers with Air Mail Service. New York ''Feb.20.1925'' marking in red, one has New York, NY, the other one - Varick St. NY machine date stamps of February 18, VF, Sieger #20M, Est. $150-$200