Hello, I found this shell a while ago and never had time to post anything about it.
It is 37mm, there's no doubt about it, however, above the driving bands it's much bigger than a usual 37mm, unfortunately I can't lay my hands on my caliper so I can't give proper dimensions. It has 2 French style copper driving bands, although they are much larger than those of the regular 37-85 (pictured alongside for reference). There's no markings whatsoever. I am not sure there is a noze fuze, it looks more like a plug. Total length is 155mm including the plug.
It is 37mm, there's no doubt about it, however, above the driving bands it's much bigger than a usual 37mm, unfortunately I can't lay my hands on my caliper so I can't give proper dimensions. It has 2 French style copper driving bands, although they are much larger than those of the regular 37-85 (pictured alongside for reference). There's no markings whatsoever. I am not sure there is a noze fuze, it looks more like a plug. Total length is 155mm including the plug.