1892 Elephant, 4c green & black, center inverted, h.r., fine, cat. $225 (Cat No. 35a) (Image)

Cat. $225, Est.$150

1905 Elephant, 5c ultramarine and gray, center inverted, n.h. and post office fresh, v.f. (catalogued as hinged) cat. $1600 (Cat No. 62a) (Image)

Cat. $1600, Est.$1,000

1906 $1, $2 centers inverted, also imperforate $1 center inverted, frame double, one inverted, plus $1 Official center inverted, overprint omitted, fine-v.f. lot (Cat No. 111a,112a,O56var) (Image)

Est.$250

1906-12 1c and 2c imperf. vertical pairs, 5c and 50c imperf. singles, also 15c and 25 perf. singles, plus 5c imperf. single and 25c imperf. horizontal pair, all twelve stamps with centers inverted, one 5c unused without gum, others l.h., fine-v.f. (Cat No. 101/123a) (Image)

Est.$500

1909 2c carmine & black, 15c indigo & black, 20c rose & green, centers inverted, three different blocks of four, l.h. or h.r., fine-v.f., cat. $960 (Cat No. 116a,119a,120a) (Image)

Cat. $960, Est.$500

1903 President Gibson, set of five perforated singles, each with center inverted, l.h., also imperforate 10c lilac & black, center inverted, unused without gum, fine-v.f., cat. $600 (Cat No. F10a-14a) (Image)

Cat. $600, Est.$500