Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 403:
1924, King George V, 1½p red brown, inverted watermark Block Cypher, booklet pane of four stamps and two printed labels at left, full OG, NH, VF, SG #420 dw, C.v. £300,Scott #189d
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