This is the back of F73k_op1_ae1991_v022. Postcard - photo to P. Darvingov. Text with pencil: he travels to Sofia and adress. Town Pleven. 13,8 x 8,8 cm. Bulgarian language. Cardboard. Dirty. Faded text. Original reference: BOX4; F73k_op1_ae1991_r022
