Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 3

Russian Locals of the Civil War period - South Russia

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Start price: $400

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YEKATERINODAR ISSUE: 1918-20, inverted black surcharge ”-50” on 2k green, imperforated complete pane of 25, surcharge is strongly shifted to the top left and forming eight pairs with and without surcharge, very fresh, full OG, NH, VF and scarce multiple, Est. $700-$800, Sc. #36a, c