Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 160:
1913 (March 30), Bern, 50c red lilac, used on Oskar Bider postcard together with 5c green, all appropriate markings, in addition a single stamp, full OG, LH, both items are VF, SBK #III, CHF630, Est. $150-$200
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