1888 10c blue, top margin plate number and imprint horizontal strip of four, hinge reinforcements, well centered, fine, cat. $6250 (Cat No. E1) (Image)

Cat. $6250, Est.US$1,500

1888 10c blue, large die proof, die sunk on card (reduced), peripheral toned spots, otherwise v.f., cat. $750 (Cat No. E2P1) (Image)

Cat. $750, Est.US$250

1888 10c blue, top margin plate number and imprint horizontal strip of four, unused without gum, right stamp with surface scrape, otherwise fine, cat. $5250 (Cat No. E2) (Image)

Cat. $5250, Est.US$750

1893 10c orange, bottom margin Plate number 552 and imprint block of eight, l.h. in the margin only (stamps n.h.), few natural gum wrinkles, centered to bottom, straight edge at right, scarce plate block, cat. $13000 (Cat No. E3) (Image)

Cat. $13000, Est.US$1,500

1894 10c blue, large die proof, die sunk on card, fresh and v.f., cat. $550 (Cat No. E4P1) (Image)

Cat. $550, Est.US$250

1895 10c blue, top margin single with large imprint, n.h., wide margins, with 2022 PFC graded "VF 80" (SMQ $550) (Cat No. E5) (Image)

Est.US$350

1895 10c blue, bottom margin Plate No. 492 imprint strip of three, h.r., fine-v.f., cat. $900 (Cat No. E5) (Image)

Cat. $900, Est.US$200

1902 10c ultramarine, top margin reprint plate number single, n.h., v.f., with 2018 PFC for a pair from which this originated, cat. $500 (Cat No. E6) (Image)

Cat. $500, Est.US$250

1914 10c ultramarine, top plate number single, n.h., v.f., with 2021 PSAG certificate for a block of four from which this originated, cat. $425 (Cat No. E9) (Image)

Cat. $425, Est.US$300

1916 10c pale ultramarine, left margin plate number single, n.h., well centered, with a photocopy of a 2018 PFC for a strip of three from which this originated (SMQ $850) (Cat No. E10) (Image)

Est.US$500

1922 10c gray violet, sheet of fifty, ten left stamps (away from the plate block) hinged (two thin), balance including the plate block n.h., some marginal signatures (affecting the plate block), fine-v.f. (catalogued as plate block and singles) cat. $4290 (Cat No. E12) (Image)

Cat. $4290, Est.US$1,500