The watch is authentic. Not exactly the sharpest photos but it would appear that the dial was relumed at some point (the lume points look a little too green, and misshapen)? The crown appears to be a generic replacement.
I’m not seeing any printing of “Swiss” or “Swiss Made” at the bottom of the dial. An American cased watch could just say “Swiss” so perhaps it’s obscured by that lume plot, or perhaps it’s the angle of the photos. I would want a crisp, high resolution photo of the dial to say anything else.
Hands appear ok. Movement is correct. Anywho… I like these classic SMDVs but this one wouldn’t tempt me at all. Unless it was stupid cheap. Actually, even then… no thanks. Lot of ‘em around in better shape. Good luck!