Excellent post! I especially love the IDs on the background masks! Great attention to detail.
One question I do have is about the photo you have of the H3 pumpkin.
Was this an original DPS movie mask, or a later reproduction? I notice it has mesh in the eyes and mouth and I didn’t think the H3 pumpkin masks had that. The Pumpkin mask in the pic above this image doesn’t appear to have the mesh. I wonder if this was something that was, for some reason, unique to this particular mask.