1904 5c blue, block of four, with "Panama" shifted left, resulting in right stamps with only one "Panama" and left stamps with two "Panamas" close together, reading up and down, heavy adhesions on reverse, still a fine and spectacular variety (Cat No. 12var) (Image)

Est.US$500

1912 1c green & black, complete booklet pane of six, disturbed gum, stitched with back cover, glassine interleaves and top pair of the adjoining pane, plus detached front cover, scarce, cat. $575 (Cat No. 38b) (Image)

Cat. $575, Est.US$250

1924 1c green, type III, right margin block of eight, unused without gum, fine and rare multiple (catalogue value for two hinged blocks of four) cat. $4500 (Cat No. 67) (Image)

Cat. $4500, Est.US$1,000

1941 5c-40c, type II, complete set of five blocks of four, used, fine-v.f. and scarce set of multiples, cat. $5050 (Cat No. CO8-12) (Image)

Cat. $5050, Est.US$2,500

1916 1c green & black, entire envelope, partially card mounted, with red Specimen and serial numbers, two security punches, fine and rare (Cat No. U1S) (Image)

Est.US$500

1921 1c green, postal card, card mounted, red "Specimen" and serial number, light corner crease, otherwise v.f. (Cat No. UX5S) (Image)

Est.US$1,500

1923 2c red, entire stationery envelope, partially card mounted on backflap only, perforated "Specimen A.B.N. Co.", with red serial number, v.f. (Cat No. U5S) (Image)

Est.US$500

1924 1c green, postal card, card mounted, perforated "Specimen A.B.N.Co.", with red serial number, v.f., extremely rare (Cat No. UX6S) (Image)

Est.US$1,500