Unidentified photographer, 1958, The Schweizer Fernsehen (Swiss Television) test pattern introduced in 1958. In the field with the number 3, the place of origin (transmitting station, studio, outside broadcast vehicle) can be identified, encoded as a number or letter., Photograph, Museum of Communication - Bern, LL/130917

Unidentified photographer, 1954 (ca), First generation of the Swiss test card, Photograph, taken from tv screen, Museum of Communication - Bern, LL/130916