First World War

This is the back of F120k_op1_ae1057_v004. Text with ink: "First infantry regiment of Sofia". Place Drenova Chapter. 15,8 x 11,8 cm. Bulgarian language. Paper. Dirty picture. Asymmetrically cut. Pasted with tape. Torn. Original reference: BOX5; F120k_op1_ae1057_r004.