Ceylon. (Cape Of Good Hope -- Boer War). 1900 Envelope addressed to 'Prisoner of War, Ceylon' bearing Cape of Good Hope SG 59a, 1d carmine (pair) tied by Dortville/ Cape date stamp 'No 11' routed via Cape Town and Durban with 'Opened under Martial Law' censor tape and Diyatalawa arrival with oval 'Diyatalawa Camp/Passed/Censor' in violet on face. Scarce Boer War censor label applied in Ceylon.