this is a bit of a fake, not a prop but I did an image like this on rotica a few years ago. I took the figure's head and bent it back into the body a full180 degrees and that left a stump on the neck. I then positioned a spare head from the library where I needed it. If you want I can send images of the turn in progress. Hope this helps. Life is like juggling three rabid badgers.... if you don't get torn up in the process, it's a beautiful thing!