Well if you have experience photographing Vader helmets and masks as I do then that information isn't necessary to be able to tell.
It's not experience that's needed. It's quality of source material that's lacking.
Exactly how much smaller do you believe the helmet is?
No, they are on the stunt helmet in the archives as well. I don't point out things frivolously that relate to a single casting.
So do you think they both came out of a common mold that way?
If so then some identifying marks common to both castings yet not on any ESB helmets would prove your case.
So? What bearing does that have on Gino's theory, except that those are promo helmets?
The point is you were using that photo as your primary evidence that ROTJ helmets existed. Once that was disproven, your argument lost a lot of merit. Not saying you're wrong, but you lack convincing proof.
Let's keep it in context. Sure ESB helmets exist and so do ROTJ helmets.
It seems surprising that you think that all the Vader helmets made for ROTJ were simply recycled. That is to say, you think that there were no ROTJ Vader helmets made in a multi-million dollar production.
I've researched enough Star Wars props to know better.
You'd think they would bother to make the main character in this multi-million dollar production his own weapon rather than recycle 7 year old props. They didn't make Luke his own lightsaber until production moved to the US and they needed a couple more.
Why did they refurbish a 30 year old C-3PO suit for Revenge of the Sith? (whose budget was far greater than ROTJ)
I could come up with a pretty large list of reused props, costumes, etc for these muli-million dollar productions.
I've shown that the one helmet Gino showed a photo of is significantly smaller than it should be if it were an ESB. Since the ROTJ helmets and masks have lost so much detail, it is easy for Gino to say they were all recycled and refinished and that there is no difference between them but there are many differences and I just named a few. And Brian Muir seems to have a helmet that he says came from a mold used for the ROTJ production, otherwise why call it a ROTJ helmet? :rolleyes So either Gino is wrong or Brian Muir and a crewmember who worked on ROTJ is wrong. It shouldn't be hard to figure out with all the contact we have at LFL.
All the differences you named are minor finish things (sanding, filling, etc) that should be unique to each helmet. I'm not sure how you arrived at these conclusions without examining several screen used ROTJ helmets first hand.
As suggested above, could it be that the ROTJ reveal was made from raw castings pulled from the ILM mold? That would explain why the mold was out during ROTJ production and Brian's could have come from that time (and basically no one is wrong).
I will say that it sure appears that the neck of the ROTJ reveal was made from the ESB reveal, but they had to at least make a new faceplate.
PS - I wouldn't bother any of my friends at Lucasfilm with this frivolous discussion.