Lot
831 
1931, 25¢ blue green, rotary. Plate block of four tied by "Washington, D.C., Jul 27, 1931" First Day of Issue duplex postmarks on Gorham corner card cover, cover with hint of edge toning and slight stain at top, F.-V.F (Scott $350 for single on first day cover). Scott No. 699 Estimate $250 - 350.
Realized: $125