First World War

This is the back of F120k_op1_ae1058_v007. Text with pencil: "Observation point in the village of Durballi." 18 x 13 cm. Bulgarian language. Paper. Folded and torn edges. Dirty. Ink spot. Faded text. Crushed. Original reference: BOX6; F120k_op1_ae1058_r007.