Solothurn S19/20 25mm Machine Cannon

[Wurger]

The Solothurn S19-100 was a 25,4mm (25,4mmx148mm) machine cannon developed in the first half of the 1930`s as a multipurpose weapon, differing in the mounts offered. As the S20-100 it was intended for infantry support as a field gun and an anti-tank gun. The S20-300 would be a double AA mount. It fired at a theoretical ROF of 250 r/min, a practical one of 150 r/min. The side-fed magazine held 16 rounds. Image taken from "Waffenfabrik Solothurn", by Kurt Sallaz.
My question is: does anyone have other images than the one depicted?

 

[klem]

The development of weapons by German companies abroad is a whole story, often discreet and little documented, due to the conditions of the Treaty of Versailles.