The good: It's got a serial, He Valve placing it right, no happy feet, date window bevel is correct, clasp release buttons are flat, arrow engraved on the end link
The AR is blue, but I've seen gens that were blue at the right angle
The bad: there's no anti-pirating mark.
Looks like a gen
Edit: After looking, I guess all 42mms don't have anti-piracy engraving, like the 45mms do.