1936 Hindenburg 1st Flight Cover w/4 25-cent stamps **

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1936 Cover. Cachet commemorating First Flight of the Hindenburg Frankfurt, Germany/Lakehurst, New Jersey. Return address seal/stamp/cachet is Lakehurst First Hindenburg Flight Frankfurt am Main. Above the cachet is written "By Zeppelin Hindenburg".
4 25-cent US Postage Stamps with wavy line cancel, round double circle cancel, and a postmark reading New York, N.Y., May 11, 4 PM, 1936.
On the back, lower left corner, is a cachet with a picture of a zeppelin with LZ-129 inside the outline of the airship, and "Mit Luftschiff Hindenburg Befordert. There is a round postmark reading Frankfurt Am Main ?? 36 8-9 b.
Addressed to: Robert A. Winter, U.S. Veterans' Hospital #106, Minneapolis, Minn. There is a partial postmark over the address, but its incomplete and can't guess at what it said.
Size: 6-1/2" x 3-1/2". Cover is sealed, nothing inside.
Condition: Good with foxed stripes on the back, and some light soiling on the back.
Shipping is free. Depending on final selling price of cover, we will insure it as necessary to make sure that it gets to you safely.
If you have questions, let me know. I will contact my consignor and attempt to get an answer for you.