History of Aviation, Rare Stamps and Postal History of the World, Part 1
Lot 413:
1916, 1c green, bottom sheet margin double B lathework block of six (3×2), nicely centered, full OG, NH, VF, Unitrade C.v. CAD$2,630 as block of four and pair with lathework, Est. $600-$800 , Sc. #104 var
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