5c Red Brown, 10c Black, Large Die Proofs on Bond, India (1P1, 2P1). 5c 32 x 33mm on Bond, 10 (Image)

$ 1,600.00

5c and 10c Blue Green, Large Die Trial Color Proofs on Bond (1TC1b, 2TC1b). Both approximatel (Image)

$ 1,600.00

5c Red Brown, Large Die Proof on India (1P1). 51 x 61mm with full die sinkage and cross-hatch (Image)

$ 800.00

1c-90c 1857-60 Issue, Atlanta Trial Color Plate Proofs (40TC4-47TC4). Complete set of all fiv (Image)

$ 4,160.00

5c 1856 Issue, Atlanta Trial Color Plate Proofs (42TC4). Blocks of four in all five issued co (Image)

$ 2,080.00

12c 1851 Issue, Atlanta Trial Color Plate Proofs (44TC4). Blocks of four in all five issued c (Image)

$ 2,080.00

Toppan, Carpenter & Co., 1861 1c Die Essays (63-E9a, 63-E9b, 63-E9d). Four items, No. 63-E9a (Image)

$ 5,600.00

3c Black, Large Die Trial Color Proof on Thick Glazed Card (65TC1af). 55 x 73mm with albino d (Image)

$ 2,500.00

National Bank Note Co., 5c Jefferson, Die Essay on India, Trial Color Die Proofs on India (67-E9a (Image)

E. $ 750-1,000

5c Dark Orange, Large Die Trial Color Proof on India (67TC1af var). Die sunk on 120 x 156mm c (Image)

$ 2,500.00

10c Black, Large Die Trial Color Proof on India (68TC1a). 41 x 49mm, on original card with di (Image)

$ 2,500.00

Toppan, Carpenter & Co., 12c Black, Die Essay on Old Proof paper, Corners Drawn in Pencil (69-E4d (Image)

$ 2,750.00

12c Black, Large Die Proof on India, Manuscript "Specimen" Overprint (69SP1). Die sunk on 104 (Image)

E. $ 1,500-2,000

12c Scarlet Vermilion, Large Die Trial Color Proof on India (69TC1a). Die sunk on 70 x 66mm c (Image)

$ 2,500.00

National Bank Note Co., 30c Dull Gray Blue, First Design, Large Die Essay on India (71-E2a). (Image)

$ 1,750.00

National Bank Note Co., 30c Black, First Design, Large Die Essay on India (71-E2a). 45 x 59mm (Image)

$ 1,750.00

National Bank Note Co., 30c First Design, Die and Plate Essays (71-E2a, 71-E2b, 71-E2c). Firs (Image)

$ 2,250.00

National Bank Note Company, 30c Blue, First Design, Plate Essay on Split Card (71-E2c). Radia (Image)

$ 750.00

National Bank Note Co., 30c First Design, Plate Essay on Semi-Transparent Stamp Paper (71-E2e). (Image)

$ 2,500.00

30c Orange, Panama-Pacific Small Die Proof on Wove (71P2a). Brilliant color, hint of toning a (Image)

$ 2,750.00

Toppan, Carpenter & Co., 90c Blue, Die Essays on India (72-E5a, 72-E5b). Three of first in Bl (Image)

$ 3,550.00

National Bank Note Co., 90c Blue, First Design, Progressive Large Die Essay on India (72-E7b). (Image)

$ 1,350.00

90c Blue, Plate Proof on India (72P3). Bottom right corner margin block of four, beautiful co (Image)

$ 250.00

Unknown Author, 2c Dull Black & Bronze, "U.S. Postage" Re-Use Prevention Essay (79-E2b). U.S. (Image)

$ 5,000.00

Charles F. Steel, (Unstated Value) Experimental Grill Essays (79-E13a). 80 x 140mm wove paper (Image)

$ 9,000.00