I am asking for assistance in identifying the model number for a Taurus revolver with the following description: caliber .357 Magnum, six-chamber cylinder, stainless steel, 3 inch barrel, fixed front/adjustable rear sights, no lock, serial number J... stamped on the right side of the frame, MG85 stamped on the cylinder face, G85 stamped on the extractor and 152 stamped on the yoke. It looks like a model 669 but I can't find anything about it being made with a 3 inch barrel. Thank you in advance for any assistance.