Lot
1300 
Interior Dept., 1873, 12¢ vermilion, used with 2¢ vermilion (O16), each tied by matching cork cancel duplexed with "Washington D.C., Apr 23" cds on local rate cover to Hon.John P. C. Shanks, House of Representatives, purple docketing at left; reduced a bit at right, otherwise Very Fine and rare combination paying the septuple local letter rate. Scott No. O20 Estimate $200 - 300.
Realized: $270