This postcard is well-traveled. I bought it online from someone in Estonia, who told me he had taken it from an album he had bought on a trip to Romania. The message on the back of the postcard is written in German, so he assumed the photo had been sent from Germany to relatives in Romania.
The studio where the photograph was taken, Studio Art Lazar Ibrahimieh, turns out to have been located not in Germany but in Alexandria, Egypt.
The message on the back translates to: “My children send a warm kiss to Uncle and Aunt Gelbendorf.”
If only the children’s mother had added her name as well! So far I haven’t succeeded in identifying Mathilde and Clary Levin in available records.