Victorinox developed the 69 mm models - like those in 61 mm - in the mid/late 1920s. They were given a two-digit production/sales number with the 4 as the first digit.
Two different models were produced, the No. 40 (small blade; large blade) and the No. 42, with an additional nail file on the back.
Victorinox mainly used mother-of-pearl, horn and tortoiseshell as scale material. These pocket knives didn't come with toothpicks and tweezers.
Production continued until the late 1940s, when it was discontinued.