Lot
1496 
1870, 10¢ brown, horizontal pair, tied by "New York Feb 20" duplex with NYFM circular grid cancels on blue 1871 folded cover to Guatemala, manuscript "Str. H'y. Chauncey via Panama" endorsement at top left, black "2" inland due handstamp, Very Fine and scarce double-rate use. Scott No. 150 Estimate $300 - 400.