Similar to the 84 mm series, Victorinox produced three series of 91 mm pocket knives. The best-known of these were the large army knives, which are still produced in large numbers. There was also the series with numbers 304 – 318, so-called cadet knives. They were similar in shape to 100 mm soldiers' knives and had almost identical tools. The third series were the so-called mechanic's knives, which were intended for electricians.
The last two series mentioned have not been produced for a long time.