The caption reads: Group of Bishorin. According to the text on the back the card was produced by THE CAIRO POSTACRD TRUST - CAIRO.
https://trc-images.nl/collection_images/hires/2018/2018.0444.jpg#\\TRC-SERVER\TRCSharedWork\TRC Database\collection%20photographs\2018.0400\2018.0444.jpg#
Postcard with the tinted image of two men and a boy outside of some tents.