Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1

Great Britain - Official stamps

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Start price: $4,000

Buyer's premium:

1902, black overprint ”Board of Education” on Queen Victoria 1s carmine rose and green, strong colors and intact perforation, large part of OG, previously hinged, fine and extremely rare, neat expert’s sign on reverse, D. Brandon certificate, C.v. $10,500, SG #O82, £12,000, Est. $7,000-$8,000, Sc. # O66