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Auction: 163 - The Philatelic Collectors' Series Sale
Lot: 1202

#13 1861, 2½c Black, a mostly huge margined Sperati forgery, neatly tied by ”Bogotá” pearl oval to piece, offered together with an original example showing large margins all around, with faint crease on reverse; after a meticulous study, this mint copy seems to be the example of the original sheet position used by Sperati, but very slightly retouched to reproduce the forgery, the genuine example shows all the characteristics of a Sperati reproduction, except for the tiny flaw in “O” of “Correos” in upper left corner, a very interesting piece of research, only two original examples of this stamp taken as a base for the Sperati reproductions are believed to exist, together with one of the few Sperati reproductions extant, this item being unique on piece; 2009 Bortfeldt certificate;

Estimate
$500 to $750