I was hoping to get a handle on what the "Solingen" insignia on vintage razors means - the wiki page says that they're razors if they're forged in Solingen, which implies that some are not. Is there any way to tell if a "Solingen" razor was truly forged there, or do you just need to rely on the brand?

I found several in pretty decent shape at an antique store today, but novice that I am, I mistook "Solingen" for the brand name and didn't notice the actual brand - I'll go back tomorrow to take a closer look, but was just curious if there was anything else I should keep an eye out for.

Thanks!