SW Costume Museum - Who's Fett helmet is this?


Was watching a video someone posted on YT, documenting the displays of the SW Museum they were at.
The Fett display showing Jango and Boba together, shows a few good close ups of Boba's helmet, but it show to not be of a paint job from either on screen, or a fan made that I'm aware of.
Paint job is "close", but is very obviously not completely correct.

Does anyone know who's Fett helmet this was?