Lot
540 
Mexico, 1861, Second Issue, 4r black on yellow, quadrisect, upper right portion of stamp in combination with 1861, Second Issue, 4r black on yellow, vertical bisect, Zacatecas left portion of stamp, both showing district overprint, tied by straight line Zacatecas handstamp (Schatzkes 1849) on fresh folded letter sheet to San Luis Potosi, Very Fine and choice, only 10 covers are shown with a quadrisect in the 1970's census, very few combinations of splits exist on this issue, ex-Mazepa; with 1995 M.E.P.S.I. certificate. Scott Nos. 9c+9a Estimate $6,000 - 8,000.
Realized: $8,000