Nice find, congratulations.

As far as I know, this shape/size has been appearing at Victorinox since the 1920s.
Back then, the knives had model numbers instead of names:
No. 50 Small and large blade
No. 52 Small and large blade, long nail file
No. 53 Small and large blade corkscrew
No. 54 Small and large blade, scissors
No. 55 Small and large blade, scissors, wide long nail file
There were various scale materials: Cellidor/celluloid, imitation bone, imitation tortoiseshell, smooth and ribbed aluminum, guilloched steel (there are many different patterns), smooth oxidized steel, mother-of-pearl and horn. There were versions with a nail file instead of the small blade, versions with a bail, and versions with toothpick and tweezers.
I love this elegant shape and grab any 75mm model I can find for a reasonable price.