History of Aviation, Rare Stamps and Postal History of the World, Part 3
Lot 1359:
1918, black overprint (type 51) on perforated 1k-70k and imperforated 1k (pair) and two of 3k one with inverted overprint, full OG (70k – no gum), F/VF, properly expertized, C.v. is over $600, stamps of 4k and 70k are priced with -‘-, Est. $400-$500, Bulat #2099/115, 2115a
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