The pocket knife models No. 437 and No. 440 belonged to the massive single layer hook knives for gardeners and farmers. They were produced by Victorinox from the 1940s and appear for the first time in the 1946 catalogue. Both pocket knives were 110 mm long. The difference was relatively small. Model No. 440 was slightly wider than model No. 437, which was more delicate.
Models No.437 and No.440 all featured 1 hooked blade. There were no options like hangers.
Hook blade: 2.5 mm
These models were 1-layer pocket knives. The hook blade was always attached to the head rivet. The other 2 rivets attached the back spring and scale.
Victorinox used beech or rosewood as the scale material for both models.
The rivets and liners were made of steel, later made of brass.
Trade names: hook knife, garden knife