These photos are original images for catalogs of Johann Weiss & Sohn, edited and retouched for printing. Unfortunately, none of the pictures is dated, on most of the back there is a Weiss & Sohn company stamp as well as a photographer's stamp and handwritten notes. Some of the company stamps indicate a new company address and contain the indication of a new telephone number with the area code 0222 for Vienna. This area code was introduced in 1966. So I can give the 1960s as the time of origin.