OK guys, I got this piece in earlier today. It was expected to come on Tuesday and somehow it was delivered on Sunday, which was a nice surprise. Took a few photos for anyone interested in this bust.
I have to say that I'm really, really impressed with it. I was worried from photos I saw that it would look a bit plasticky in person and a bit lower quality given the price. I was really happy to see that the exact opposite is true--in person this looks truly high end, and it's made out of polystone, according to the certificate of authenticity Queen Studios provides in the box.
It's very cliche to say, but it's true for this bust--it looks much better in person and has genuine presence in the room.
To me, it looks like something that was custom built by Iron Head studios or ILM or some effects shop in order to give Ryan Coogler an idea of what the Panther would look like on screen. I'm really impressed, and when light hits any of the silver parts of the bust, it makes the piece pop all the more.