I received this cover, which I really like, and I wanted to post some better images of it and I am curious about some of the other markings on the piece.
I like the cover as it was posted onboard the Hindenburg after its first visit to the US, during the return flight to Germany. The letter was addressed to a Mr. M. Lippmann in Lugano Switzerland. On the back, there is what appears to be an ink stamp that says 'Libreria Lippmann, Lugano'.
Can anyone decipher the stamp? Does 'libreria' mean 'library'? Is it a cancel without a date? Or what would you make of the ink stamp?
Also, on the back, in the bottom right corner there is some very tiny, tiny print. Any ideas? Probably added after by a collector to mark ownership? Or maybe the ink stamp cachet maker?


