This gun looks like an "Helice" to me
Pretty sure it's not an Helice, WC. Most of those are so marked with some form of the word around the top lever pivot. But the most telling factor is the visible screw in the top lever. As I understand the Helice system, the screw comes up from the bottom, so you don't have a visible top lever screw. That's true of all the Helice system guns I've seen, as best I can recall. I checked the Verney-Carron catalog material on the V-C Helice gun I owned and there's no screw visible where the top lever pivots.