British East Africa SG 99xs Specimen 1897-1903 50r mauve variety watermark inverted new-edition lower right corner block of

lower right corner block of 6 (3x2) from the left pane

upper right corner block of 4 showing requisition number 'Y1090'

but an extremely scarce usage

cancelled by a Registered Threadneedle St B

Signed Pemberton

British East Africa SG 99xs Specimen 1897-1903 50r mauve variety watermark inverted new-edition lower right corner block of1897 1903 50r mauve, variety Wmk reversed, opt 'SPECIMEN' for UPU distribution, large part o. g. Small gum crease and trivial perf toning, still an attractive example with the watermark clearly visible from the back. Scarce as only four or five sheets are likely to have been distributed, many of which are not available to collectors. (cat 450) P267000116