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

Worldwide Air Post Stamps and Postal History - Sweden

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Start price: $75

Buyer's premium:

1912, Barnens Dag Sverige Forsta Flygpost, semi-official Air Post stamp for demonstration Flight over Stockholm, (50o) violet, full OG, NH, in addition flown cover from Falun to Lefle, franked by complete surcharges set of three (No.C1-3), all are VF, Est. $100-$150