1858, 4p ("Cuato Ps") Chestnut Brown, Error of Color (4 unlisted variety). Position 18, sharply-struck ponchito cancel, margins mostly clear of or just touching framelines, rich unadulterated color in the distinct Chestnut Brown shade, couple creases across corners at left

VERY FINE APPEARANCE. THE ONLY USED STAMP AMONG THE THREE RECORDED EXAMPLES OF THE 4-PESO CHESTNUT BROWN COLOR ERROR, PROVIDING EVIDENCE THAT THIS MAJOR RARITY OF SOUTH AMERICAN PHILATELY WAS ISSUED THROUGH THE POST OFFICE.

Until the discovery of this used 4p Chestnut Brown color error, status of the two unused examples was unclear. The used stamp offered here is evidence that the errors reached the post office. Due to its extreme rarity, the 4p Chestnut Brown color error has remained in relative obscurity, compared with color errors of other countries. We are confident that this sale will draw deserved attention to these important classic error stamps.

With 1985 Solari-Mautalen photo certificate for the unused and used copies offered in this sale.

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