Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1

Worldwide Air Post Stamps and Postal History - Germany

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Start price: $150

Buyer's premium:

1912 (March 22), Bork – Brueck, violet semi-official with no value indicated, clear appropriate postmark, mostly VF, a copy of Dr. J. Simon certificate, Mi #2A, €800, Est. $250-$300