That magnifier on the rolex, let alone the crown missing would make me think it's fake, however, it could have been an attempt at repair by a non rolex jeweler and the guy just didn't care, or couldn't afford a new dial.
If you have a good independent jewelry store, that deals in pre owned high end watches around you, they could probably pop the back for you and look at the movement. There's usually a salesman or one of the owners will be an enthusiast at places like that and will be able to tell you quickly if legit or not. The rest looks decent, even down to the poor quality of the band. Rolex put out some shitty bands in the 70's.
That magnifier screams fake though.