Poland. (Prisoner of War Mail). 1919. Registered envelope addressed to 'Comite International de la Croix Rouge, Section Polonaise, Geneve' bearing Austro - Hungarian 'Feldpost' Yvert 61, 50h green tied by Lemburg. Lwow double ring '13th Jan 19' with registration label and hand-stamp 'Wojskowa Cenzura/ Lwow' i nviolet with framed 'Vendu Par/ L' Agence Internationale/ Der Prisonniers de Guerre' and Geneve receiver '25/1'. Very fine and scarce item.