Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 157:
1913, Start Aarau, 50c blue, yellow and magenta, two singles, one with nice offset on reverse and practically omitted yellow color, full OG, NH or LH (stamp with offset), VF, SBK #I, CHF600, Est. $150-$200
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