From 1975 to 1991, Victorinox used scissors with a bent spring, and with the two halves of the scissors attached with a small, adjustable screw. Its size depended on the model.
You can use the scissors on paper, cardboard, aluminum foil, plastic and other soft materials. Don't use it to cut wire or sheet iron, or you will quickly dull the blades.
This style of scissors sometimes needs to be adjusted. If the blades are too "floppy", use a small screwdriver to tighten the screw a bit. If the blades are binding, then loosen the screw about 1/8 turn. Put a drop of mineral oil at the pivot point, about once a year.
All Swiss Army knife models with scissors, between 1975 and 1991.