Apparition du Zeiss Ikon super ikonta A 531 dans les catalogues de distributeurs du site
| Photo-Plait 1937 (hiver) | &page=45) | Photo-Plait 1937 (hiver) | &page=44) | Zeiss Ikon 1937 Fr |  | Photo-Hall 1937 mai |  | Photo-Plait 1938 |  | Photo-Sport 1938 |  | Porst 1938 (18) | &page=93) | Porst 1938 (19) | &page=92) | Photo-Hall 1938 (extraits) | &page=17) | Photo-Hall 1938 avril |  | Photo-Plait 1939 |  | Montgomery Ward 1939 |  | Photo-Plait 1939 |  | Odéon Photo 1939 |  | Photo-Hall 1939 |  | Porst 1939 (20) | &page=46) | Zeiss Ikon 1939 Fr |  | Zeiss Ikon 1939 Fr |  | Porst 1940 |  | Porst 1948 |  | Central Camera Co 1949 |  | Porst 1949 (26) | &page=22) | Porst 1950 (28) | &page=103) | Photo-Hall 1950 decembre |  | Photo-Plait 1950-51 (hiver) | &page=30) | Photo-Plait 1951 |  | Zeiss Ikon 1951 |  | Zeiss Ikon 1951 |  | Porst 1951 (30) | &page=88) | Porst 1951 (31) | &page=108) | Porst 1951 (31) | &page=109) | Grenier-Natkin 1952 |  | Porst 1952 (37) | &page=121) | Porst 1952 (37) | &page=120) | Porst 1952 (39) | &page=134) | Porst 1952 (39) | &page=135) | Odéon Photo 1953 |  | Herlango 1953 |  | Sears 1953 |  | Porst 1953 (41) | &page=136) | Porst 1953 (41) | &page=137) |