1847 Franklin 5c red-brown, imperf plate Proof, on India paper. Superb UN as made, 4 margins. SG 1(p), Sc 3P3 cat US$350 (normal cat US$850). (P) (Image1)

Estimate AU$375

1869 Washington 90c black & blue, imperf plate Essay on stamp paper. Superb UN as made, 4 margins. Sc 122-E2b cat US$275+. Rare unissued design as only 1 pane printed. (P) (Image1)

Estimate AU$250

1869 Washington 90c black & pale violet, imperf plate Essay, on stamp paper. Superb UN as made, 4 margins. Sc 122-E2b cat US$275+. Rare unissued design as only 1 pane printed. (P) (Image1)

Estimate AU$250

1869 Washington 90c black & dull violet imperf plate Essay, on stamp paper. Superb UN as made, 4 margins. Sc 122-E2b cat US$275+. Rare unissued design as only 1 pane printed. (P) (Image1)

Estimate AU$250

1869 Washington 90c black & pale orange-red, imperf plate Essay, on stamp paper. Superb UN as made, 4 margins. Sc 122-E2b cat US$275+. Rare unissued design as only 1 pane printed. (P) (Image1)

Estimate AU$250

1869 Washington 90c black & red-brown, imperf plate Essay, on stamp paper. Superb UN as made, 4 margins. Sc 122-E2b cat US$275+. Rare unissued design as only 1 pane printed. (P) (Image1)

Estimate AU$250

1890-93 Portrait set 1c-90c, no cnr triangles, plus 2c shade, imperf Plate Proofs on card. Superb UN as made, all 4 margins. Sc 219-29P4 cat US$750+, SG 224-34(p) cat £1800 as normals. (12) (P) (Image1)

Estimate AU$900

1893 Columbus $2 brown-red. VFU, oval barred REG New York pmk. Sc 242 cat US$600. SG 247 cat £750. (P) (Image1)

Estimate AU$450

1898 Omaha Exposition $2 orange-brown. VF fresh M, excellent centring. Sc 293 cat US$1900. SG 299 cat £2500. (P) (Image1)

Estimate AU$1,800