Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1
Lot 43:
1930, Commercial Airways Ltd, (10c) black, two complete panes of ten printed on thick or thin paper, stamp on position 1 of both panes with broken oval variety, full OG, NH, VF, C.v. $375, Est. $150-$200 , Sc. #CL48, a
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