Gino, when were you at the archives? And who was your host?
I am surprised you were allowed to "handle" whatever you wanted. That is not allowed, even for very senior LFL members! I saw many original trooper helmets there. Some in pretty bad shape. Others were recognizable from which movie they came from.
I actually just got back from the Ranch and was in the archives. You could spend all day in there just looking at the Vader helmets. Rules were different than what you describe. Not that it's incorrect, just sayin'.
EDIT: Nothing nefarious meant by my post. Just offered to help clear up any misunderstandings. Carry on folks...