1890 1/2a bister brown, imperf. horizontal pair, h.r., full to clear margins all around, fine (SG 4ba) cat. £900 (Cat No. 14a) (Image)

Cat. £900, Est.US$500

1890 1/2a bister brown, imperf. vertical pair, h.r., margins all around, v.f. (SG 4ba) cat. £900 (Cat No. 14a) (Image)

Cat. £900, Est.US$500

1890 2a vermilion, imperf. sheet margin single, watermarked (papermaker's initials), h.r., fresh and v.f., with 2017 APS certificate (SG 6a,4,750 for imperf. pair) (Cat No. 16a) (Image)

Est.US$750

1890 4 1/2 brown violet, imperf. horizontal pair, used, margins all around, fine (SG 11ab) cat. £450 (Cat No. 20a) (Image)

Cat. £450, Est.US$200

1890 1r rose, imperf. single, used, margins all around, v.f. (SG 14a, £1,700 for a pair) (Cat No. 25a) (Image)

Est.US$500

1896 1r gray, with three minor varieties (inverted "S", dropped "H" and broken top of "A" in "Africa"), tied by Mombasa cds on locally addressed cover, fine, a scarce and attractive cover, with 2010 Sismondo certificate (SG 59) cat. £840 (Cat No. 66var) (Image)

Cat. £840, Est.US$350