Germany, Imperial. A Lot of Stuttgart POW Camp Postcards Featuring Serbian Prisoners

(Postkarten). A lot of six picture postcards, all presenting black-and-white photographs of Serbian prisoners, all reverses present unused, three measuring approximately 13.8 cm (w) x 8.7 cm (h), three measuring approximately 8.8 cm (w) x 13.8 cm (h), ranging in conditions from near very fine to very fine.