Lignose Einhand
This pistol is the model 3A (I believe), it’s a weapon invented and patented by Chylewski in 1916 and manufactured at the beginning by the firm “Société industrielle Suisse Neuhausen” which would have produced approximately 1000 of them.
The Bergman firm then manufactured under its name but in very small quantity.
Lignose continued its manufacture under the term 2A and 3A until the Second World War day before.
This one has a cocked hammer indicator with the back with the slide, it is a device which does not exist on all the models.
Alain