No expert by any stretch but I will offer my opinion any way
1) If it is rep it is a very nice version. Wish mine looked like that What makes me think it might be gen is that the two position adjustment at the clasp looks like it fits. On mine I cannot fit it on the inside of the two positions. However, the spring bar cutout looks a little rough. Final judgement I am not sure.
2) Looks ETA to me. Tough to judge though.
3) Looks like an older ProI from a Super Avenger. What is the end link size?