Worldwide Air Post Stamps and Postal History, One Man Collection of Tannu Tuva, Philatelic Rarities of the World, Part 2

Imperial Russia

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Start price: $5,000

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Description

1908, plate proof of 10k in blue, perforation 14½x15, two-side margin horizontal strip of four with gutter in the middle, right stamps are placed upside down and forming tete-beche pair, printed on wove paper with varnish lines, each stamp has 3 instead of 2 lines of inner oval and with top ribbon curls different from issued stamp, no gum as produced, VF and extremely rare, Est. $10,000-$12,000, Scott #79