U.S. and Worldwide Stamps and Postal History

1851 1/2ng black on pale blue paper, printed in error (paper color of 2ng, rather than the gray color of the 1/2ng), full margins all around, hinge disturbed original gum, fresh and v.f. example of this rarity, signed Richter, Starauschek, etc., with 1957 Grobe and 1999 Tilo Rismondo certificates ("Sehr seltenes stuck der Sachsen-Philatelie in einwandfreier erhaltung" - very rare piece of Saxony philately, in perfect condition), ex-Manus. The error occurred when paper meant for printing the 2ng value was inadvertently inserted in the stack for printing the 1/2ng value (Mi.3F, Euro 25,000)
Cat. Val. $ 20,000
Estimate: $10000