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

Canada - Officially Sealed stamps

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Start price: $300

Buyer's premium:

1907, Queen Victoria, Dead Letter Office, black on white paper, top sheet margin block of four, partial imprint on selvage, full OG, NH, F/VF, $1,800++, Unitrade C.v. CAD $2,200 (two stamps fine, two – VF), both values as singles, Est. $500-$600, Scott #OX3