Lot
1666 
Mexico, 1861, 8r black on red brown, half used as 4r, Guanajuato. Tied by Guanajuato circular postmark on 1861 folded letter sheet to Silao; small cover tear at top, Very Fine and rare, only 37 bisects of this stamp known to exist, ex Gutierrez, O. Rodriguez. Scott No. 11c Estimate $1,000 - 1,500.
Realized: $750