OK, this is not really a prop, but a life-size bust made by Sideshow. We all know Sideshow is not as much about accuracy, as it is about "artistic interpretation", whatever that means lol. So this is what they will be offering soon:
https://s11.postimg.org/vh8yk2r1f/BT_SDCC2017_N088.jpg
https://s3.postimg.org/tet0hgtwj/BT_SDCC2017_N090.jpg
I just want to know why Sideshow can't do a decent Stormtrooper helmet... in any scale (1/6, 1/4, or 1:1).
Another disappointing TK rendition by Sideshow.
It'll undoubtedly be far more cost effective to purchase (accurate) parts and build a bust oneself.