Lot 11647 – 1900 (Jan 13) envelope from London to Mafeking with GB 1887 1/2d vermilion vertical pair

1900 (Jan 13) envelope from London to Mafeking with GB 1887 1/2d vermilion vertical pair tied by Sydenham duplexes, addressed in the hand of the infamous W. R. Bray (who liked to test the resolve of post office clerks and postmen), written on reverse « If undeliverable on account of the war with Transvaal return to… », with Mafeking 10 AU cds and endorsed « unclaimed » at lower left, fine and scarce incoming mail the Mafeking/Bechuanaland.