Regan,
On occasion you’ll see some genuine items on eBay and elsewhere. Cap posted one on the snake-like tongues being owned by J.J. Abrams here. The fanged teeth were once on sale for Regan and Karras on eBay I believe.
It would be great to see owns what and who cared about keeping something a props from the film after they completed shooting. I can see where Max von Sydow or the late Jason Miller would have held on to the Holy Water bottles and I’m sure there were lots of them. Sometimes the studio warehouse will have sales like they did for the film Alien and Aliens which is where I got the original Alien chestburster from the film Aliens. Although I have not seen another one like it, I’m sure the props department created dozens of them, but this is the screen version (below).
Father Bowdern
