I have some of the grip material on hand from Ep. 3, I can snap a photo.
From what I understand, the "hook" part was a separate flat machined piece, fitted to the hilt. Some of the resin ones had a metal hook inserted I think.
This is allegedly an Episode II hilt (the first iteration of the prop) so any found parts would likely be on there. I don't see much..
the grip material is a little different here than the Ep. 3 stuff. The red button I would think would be a good candidate for found parts but it just looks like a piece of acrylic. You can see the plating has oxidized, and the machined part, being raw metal, has kept its original color.