Its a very good rep, and to be honest, whilst wearing it, its very difficult for anyone else to tell if its rep or gen, as the differences are so minor. Its only under close inspection you will notice the tells.
Arrows missing from the ends of the letter G of TAG on the dial.
Red tipped hands have a darker shade of red. Gen are brighter red.
Rep crown badge is more convex whereas gen is almost flat
Blue screws in movement
Rotor has incorrect Geneva strips
AR on earlier models are too blue, later are better
pushers are a nats pube longer on the rep.
Rep bezel insert, and chapter ring are ever so slightly off, but only visible by OCD sufferers.
Date font is slightly off, but is better than the 41mm date only model.