Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 197:
Description
1918-23, small perfin ”O S” on King George V 1s4p turquoise blue, perforation 14, watermark Wide Crown Narrow A, misperforated vertically block of four, bottom right stamp with wide ”1” at right, full OG, NH, VF and rare multiple, J. Bozic certificate, SG #O75 var, Brusden-White #128A, ba, n, C.v. A$1,725 as singles, Est. $500-$600, Scott #OB37 var
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