Back of Jakov Kalef's picture in Serbian dress

This is the back of the photo of my granduncle, Jakov Kalef, and his sister Sara, dressed up in national Serbian clothes. The photo was taken in the S. Alkalaj studio in Belgrade in 1924. Handwritten on the bottom in Serbian it reads: ?Jakov Kalef and sister Rahela Kalef. [Note: The woman in the picture closely resembles Sara Kalef pictured on the monument in the Belgrade cememtery.] Above there's something handwritten in German.

Photos from this interviewee