Bulgaria. (Prisoner of War). 1918. Stamp-less envelope headed 'Correspondence Des Prisonniers de Guerre Bulgares' addressed to 'Le President, Comite Internationale de la Croix Rouge, Geneve', cancelled by Vaulluse date stamp '15th Nov 18' with circular 'Prisonniers de Guerre' cachet in red. Scarce item from the Bulgarian P.O.W. 'Camp de Serres, Carpentras (Vaucluse), France.