Vader helmet question

I need some help identifying this. My brother was at JJ Abrams bad robot offices the other night and this is there. Question is, is it one of the original helmets from a new hope?
The curved line along the top of the cheek plates and filled in nose seem to suggest so.

Any help identifying it appreciated
https://instagram.com/p/BQ-FX4eBCxn/

EFX helmet maybe ?

I was going to say eFX Limited

The guys at 501stsithlords.com would be the guys to ask, but the lens distortion of the photo will make it tough to identify with 100% certainty - as alot of helmets have their own signature wonkiness that helps identify them - photo distortion can throw this off and make even a darth stone look like a Don post, at times. The paint is too clean to be an original - this is definitely a replica, and from the paint alone, I can tell you a not very accurate one - it has at least been idealized