No, there are only two factories that make the PAM438 (there was a third unknown factory but it was made of DLCed Titanium not ceramic), V6F and VSF (or XF), which actually means they were only made by one factory (V6F split itself into two factories and they became VSF and XF). So the latest ones would be from VSF (or XF that's what other TDs call them). V2 (or V3 just make sure the movement is completely black).