Hi Diser, you are wrong, so Mc Keown! SEM (stand for "Société des établissements modernes de mécanique et de décolletage Jean Cros") was created by Mr Jean Cros in ~ 1938 - 1939 to make weapons and military devices. After France's capitulation in 1940, company needs to change production......

Hi, this camera was not a product from Cornu in Paris, but from SEM in Saint Etienne (France). SEM set for "Société des Etablissements Modernes de Mécanique."