If I'm not mistaken, RSprop used a prototype helmet made by ILM for Don Post (when the brand developped its Deluxe line). But I'm not 100% sure of this information.
And if I remember well, Mark sculpted some parts for his TIE pilot helmet (ears box, mohawk), used a real APH helmet and reworked his ANH faceplate. But again, I could be wrong and he would deliver better informations on his own stuff.
Here's a comparison pics between RSprop (on the left) and CFO (on the right). I'm sorry, I finished both helmet in different way and the light isn't the same. But I really liked to work on both quality kits!!!
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