The Model No. 19 first appears in the 1922 catalogue. At that time, the Model No. 19 had a large cutting blade, a small cutting blade, a saw and an awl. In the later 1937 catalogue, the No. 19 model no longer had a small cutting blade, but a flute blade. It is unclear when exactly the change took place and why. The original model was still available in 3 sizes. The later model was only 106 mm and 100 mm in size, like all farmer's knives with the flute blade. Until the end of production, all variants of model no. 19 were produced in the two sizes - with the exception of the 2nd class horn cups with tools made of ordinary steel.
From about the mid-1920s, the flute blade was always made of stainless steel, even if the other tools were made of carbon steel. The flute blade also had very little pressure from the back spring, making it easy to move to any position needed.
The original pocket knife No. 19 had a large cutting blade, a saw, a small cutting blade and an awl, the later version had a flute blade in place of the small cutting blade. The additional bail was available as an option for the model.
Big cutting blade: 2.5 mm – 2.8 mm; Awl: 2.0 mm; Flute: 1.8mm ; Saw: 2.0mm
In the original Model No.19, the top tier consisted of the small cutting blade and the blind awl, the middle tier the large cutting blade, and the bottom tier the saw. Saw and blind awl moved around the foot rivet. In the later model, the upper layer consisted of a large cutting blade and blind awl, the middle layer of the saw and the lower layer of the flute blade. A center rivet fixed the back springs.
Victorinox originally used black fiber scales as the material for this pocket knife, later also class I and II horn and red fiber instead of black fiber.
The rivets and liners were made of steel or brass, the jaws of steel or nickel silver, depending on the version. The high-quality, called "fine version", used rivets and liners made of brass as well as jaws made of nickel silver and rust-resistant steel for the tools, if this was already available.