2m orange on creamy white laid paper 'Small Camel' postal stationery envelope (H&G B13) with added 1951 3m black & green 'Giraffe' issue with 'SCHOOL' overprint in black (SG 125) tied by large boxed 'P.& T. TRAINING SCHOOL OMDURMAN' cachet in violet. These were remaindered stamps and stationery used to train new postal staff. Very unusual and scarce.