Postcard from Organization "Ilinden" to Petar Darvingov

This is the back of F73k_op1_ae1298_v001. Text with ink: Greetings for a name day. Town Sofia. Color image. 18,5 x 14,1 cm. Bulgarian language. Cardboard. Caption on the picture in ink. Dirty. Original reference: BOX4; F73k_op1_ae1289_r001.