Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2
Lot 974:
1974, Guglielmo Marconi, Inventor and Radio Pioneer, 60k, 90k and 200k, perforated and imperforated sets of three, sets of imperforated proofs in miniature sheets of four and complete set of three epreuves deluxe, perfect quality unit, full OG or no gum as produced, NH, VF, Est. $100-$150, Sc. # 251-52, C118
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