Thats exactly what seems to be the case here ( at least in my opinion from what evidence is clear on the casting)

This is corroborated by TPD experts and by Brandon Alinger (COO of LA branch of The Prop Store and author of Star Wars Costumes) that ROTJ is a unique mold different from ANH and ESB in post 55 of this topic:

http://thepropden.aokforums.com/viewtopic.php?p=65112

In all authentic casts you'll find a concavity / divot near the center of the right cheek, the outside part of which I think corresponds to the location of the C-scar. With your right thumb against the right side of the nose, if you slide it across the right cheek, you'll find a natural stopping point at that divot. The outside of your thumbprint approximately corresponds to the location and shape of the C-scar. The thin distinct C-scar is most apparent in ANH. It is not as apparent in ESB and even less apparent in ROTJ. But the divot is present in all 3.

I've taken the liberty of creating this video which morphs a screen capture from ANH and one of the ROTJ GS pictures posted earlier. The viewpoint angle and distance is not the same, so it's not valid for overall comparison. I've scaled and rotated the images to specifically focus on the right cheek. There are features which correspond, including the ROTJ GS divot and the ANH C-Scar.

http://i89.photobucket.com/albums/k240/bpoodoo/Vader/anhtoGSHD.mp4

That is very impressive.
I am no lighting or camera expert but I am very logical. The camera angles and lighting would strictly have to be the same for a true comparison or am I missing the point.
I have never noticed the C scar before and just clocked it on a angled photo I took recently.
I will say I am quite the novice.
Whilst browsing this forum my head has been a bit mashed. There are so many opinions .
There is a picture on one of the threads where a picture of Darth Vader is beheaded. It is not a screenshot but a camera image. (Cant seem to find it..)The front of the dome has a raised type of filler similar to mine. Wishful thinking I know but you experts can put me straight.

Greg

The photos shown have been excellent. Taking them outdoors provides nice ambient lighting to clearly see the close-up details. And that's what the experts here (much more knowledgeable than me) often use to determine origin.

And yes when comparing one helmet to another through photographs by overlaying them it is important to have the same distance and relative an angle to what you're photographing for all the features to line up, particular those which span depth. Otherwise a perspective distortion is introduced that can cause even the same helmet to look different when photographed from different distances. I studied this ad nauseum a few years ago and provided the following write-up which has a couple of image examples that demonstrate and quantify this effect.

https://drive.google.com/file/d/0B13YyeojRHKeUzdLVHFucnV6X1E/view?usp=drivesdk

Is the camera image you mention any of these?

Hello banthapoodo. It's the first pic. I'm mistaken.

Ah ok. Those helmets are respectively the Dagobah, Don Bies ESB, and Funeral Pyre. I threw in that last one because a glimpse of the dome connector is visible and because the orange color looked similar to the color in some areas of yours. But that would have been a major restoration, and the Funeral Pyre one is generally regarded as being from a Rick Baker (RB) mold that would not have had the 3M tabs at the top of the mask.

it is my understanding that the funeral.pyre helmet was actually one of the 13 tour helmets produced by rick baker/greg botin/ don post for promotional appearances in the 1970s. as the original suit Kermit Eller wore was cloned into 13 touring suits, then GH made 13 castings of one of those helmets.... I happen to own GH ANH 13, and its brother, GH ROTJ 13...... the ANH matches the funeral pyre, and the ROTJ has a two step mounting ring with 3 screw heads.. once i figure how to load pics ill start a thread... THIS NEW ROTJ. is very exciring, akin to simons trooper suit before it became RS

Looking forward to the pic's

Here here.
Post them up. Looking forward to it!

I was under the impression that the Jeff White/Fiberdyne/GH type Vader lid is an "idealized" version created at Don Post Studios.

This is correct. I owned one of the Ghost Host helmets 10 years ago (!) and I can confirm it is not a copy of the Rick Baker helmet but copied from a helmet that was considerably re-worked by Don Post Studios. In its day it was one of the go-to helmets and certainly one of the best representations of the ANH Vader -- the Dome is still one of the best options that is more readily available. Ghost Host is a member here and would certainly be able to speak to this directly.

Dave

Hello All, Some more pics of the clean up process. The dome is taking a back seat at the moment.
I started off by using water and detergent to clean off the 35+ years of grime. The grill is now silver and there was what looked like a lot of nicotine staining. It is still ongoing. The painting is all over the place so with advice ,rubbed off the paint with acetone and cotton wool. Problem is I am kind of stuck because another type of paint on it or lacquer will not budge.
The bondo on the tab area is now removed. What a nightmare.I eventually customised the end of a soldering iron and guitar pick and slowly picked away at it. Under the circumstances I am pleased with the result.

Additional pictures. It looks like a relic from the past.