A very unusual issue used in Bechuanaland by Tati Concessions Ltd on mining permits and very occasionally on mail. There are just six stamps in the series... all are very rare.
(01) 1/- Red (1896)
(02) 2/6d Deep Blue (1896)
(03) 5/- Purple (1896)
(04) 10/- Sage Green (1896)
(05) £1 Blue-Grey (1896)
(06) £5 Orange (1896)