History of Aviation, Rare Stamps and Postal History of the World, Part 1
Lot 428:
1930, King George V, Dr. Eckerlin’s ”Rotary Intaglio Process” to mimic the image of Admiral 3c carmine, imperforated essay of reversed (mirrored) design, complete pane of 25, printed on thick ungummed paper, VF and scarce in a complete pane, Est. $600-$800
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