1840 1p black, Plate 8, lettered S-K, unused with some gum, mostly covered by adhesions, margins all around, just touching at upper right corner, fine appearing example of unused Penny Black, with 2020 Sismondo certificate ("impossible to say if there are any faults hidden by the extensive adhesions. A very scarce mint stamp") (SG Specialized AS46,œ16,000) (Cat No. 1) (Image)

Est.$1,500

1840 1p black, lettered H-J, watermark inverted, red MC cancel, large margins all around, excellent color and impression, tiny thin, still v.f., scarce variety (Cat No. 1var) (Image)

Est.$750

1858 (1 Sep) cover to Costa Rica, franked with pair of 1sh green, used in combination with 1p red and 2p blue, each canceled by "43" town diamond, sent via "Grey Town" steamship to San Jose, arrival docketing (Oct 5, 58) and Stoke-Newington undated departure pmk on back, also red Crowned-circle datestamp, small stain (disinfection?), fine three color franking to Costa Rica (Cat No. 20,21,28c) (Image)

Est.$250

1858 (16 Apr) cover to Costa Rica, franked with pair of 1sh green on azure paper (SG 73a), used in combination with 1p red and 2p blue, each canceled by "50" town diamond, sent via "Grey Town" steamship to San Jose, arrival docketing (May 23, 58) and Stoke-Newington undated departure pmk on back, also red Crowned-circle datestamp, small stain (disinfection?), fine and very rare usage of 1sh blue paper on cover (Cat No. 20,21,28c) (Image)

Est.$2,500

1878 œ1 slate gray, Plate 1, lettered C-C, imperforate color trial, overprinted "Specimen" (type 9), Ty. 9, plate 1, h.r., v.f., rare (SG œ2,700+) (Cat No. 75P) (Image)

Est.$1,000

1882 œ5 pale dull orange, bluish paper, lettered A-J, overprinted Specimen, h.r., well centered, good color, v.f., with 2013 Sismondo certificate (SG œ3,000) (Cat No. 93aS) (Image)

Est.$1,500

1967 Queen Elizabeth value omitted, two different perforated panes of 25, in gray and orange red, n.h., v.f. (Image)

Est.$500

1967 Queen Elizabeth value omitted, two different perforated panes of 20, in gray and orange red, n.h., v.f. (Image)

Est.$400

1967 Queen Elizabeth value omitted, two different values, pairs and blocks of six of each, n.h., v.f. (Image)

Est.$150