The same photo can be found on the net colorized and in different formats.The genuine
pic was taken by William Henry Goodyear. (Wikipédia):
Between the years 1895 and 1914, Goodyear conducted survey expeditions to Europe, Turkey, Egypt and Greece visiting medieval cathedrals, churches, and mosques, meticulously noting the measurements of piers, transepts, apses, etc. and taking numerous photographs of these details in his efforts to document the occurrences of refinements. The photographs taken during these expeditions provide not only the visual key to his work on refinements but are also valuable records of medieval churches and cathedrals before the world wars.
I Believe this is some sort of souvenir item _ bogus origin….
ÝSTANBULÝSTAN site photo below: