Sorry, I'm not an expert with vintage and I really cannot offer much info. However, looking at that piece, it's obviously an older model. That bracelet is looking a little too crisp? I noticed in the backside, they are solid links. Maybe an expert can chime in, but I thought it would be folded links on an older ref like that? Aftermarket or incorrect later model bracelet?
Also, that box is fake, so that may be a warning sign?