Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2

Monaco

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Start price: $100

Buyer's premium:

1937-38, surcharges on Postage Due stamps, block of four 40(c)/60c and two horizontal pairs 65(c)/1f and 85 (c)/1f, small ”0”, wide ”6” and spaced denomination varieties with normal stamps, full OG, NH, VF, Dallay #155/58, a, C.v. €631++, Est. $150-$200, Sc. #137/40, var