Brazil. (German Prisoner Of War Mail/Under Cover Mail). 1919. Brazil postal stationery envelope 200r blue cancelled by 'Friburgo' double ring written from German Prisoner of War in 'camp No 1' with 'Aberta Pela Censura/S.P.' censor label tied by framed 'Censura Correio Rio/Brasil' censor cachet in green addressed to the 'Deutsche Hilpsverien, Stockholm' with 'Opened by Censor/4666' label and Stockholm arrival. Rare item from German Seaman captured in Brazilian waters and interned, the address in Stockholm is under-cover, the mail was then forwarded to Germany.