Lot
1633 
Mexico, 1861, ½r black on buff, without overprint. Block of four canceled by San Luis Potosi cds on October 1861 folded letter to Hacienda Del Carro, F.-V.F., a very rare franking, with less than five block of 4 frankings known. Scott No. 6a Estimate $1,000 - 1,500.
Realized: $950