Poland. (Prisoner of War Post). 1919. Envelope addressed to 'Comite International de la Croix Rouge, Agence International des Prisonniers de Guerre, Geneve' bearing Poland Yvert 151, 25f turquoise (pair) tied by Stanislawow date stamp with framed 'Cenzura Wojskowa/ w Stanislawow' in blue and circular '4' cachet in violet with framed 'Vendu Par/ L' Agence Internationale/ Der Prisonniers de Guerre' on face. Very fine item.