There are some inaccuracies tho in this Evolution of the Swiss Army Knife document.
The metal cross inlay appears on the fiber scale before 1909, being shown in the 1903 Victorinox catalog; most places in their literature Victorinox mentions the year 1921 not 1923 as when they began using stainless steel; the caplifter appeared on the Vic screwdriver before 1942, being on fiber scaled knives: plastic scales replaced fiber in the 1930s.