Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 169:
1913, Lugano, 25c blue green, red on gray background, a part of appropriate Lugano cancel, mostly VF, R. Berra- Gautchy certificate, SBK #IX, C.v. CHF2,500, Est. $400-$500
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