Europe Auction #42 Day 4

Großbritannien: 1902 King Edward VII, 1d blue ECKERLIN PLATE PROOF ESSAYS printed in 1924 on ungumme
1902 King Edward VII, 1d blue ECKERLIN PLATE PROOF ESSAYS printed in 1924 on ungummed paper as sample in the hope of selling Dr. Eckerlin's rotary press process for intaglio printing (developed by Herbst & Illig in Germany) to the British Post. A very fine strip of three. A VERY RARE ESSAY. Photocopy of RPS CERTIFICATE (2018) for similar item of same origin included.
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