Found in the tf2 control point normal psd file, it's an ambient occlusion bake and specular mask for a never before seen version of the control point with a split center! The third picture is a remake of the mesh done by GrassyTrams, posted with permission.
For reference, this is the *second* non-final version of the control point model we've ever seen, with the first being a 2-hole one seen in some early screenshots:
When you've got some free time, could you check the PSD file for the RED pickup truck if it's included in the repo leak? I'm very interested to see if the Photoshop file contains this early design featuring a red cab and blackwall tires, instead of the black cab and whitewall tires in the final game.
pickup textures are only in tga format, I'm afraid
youtube.com/watch?v=PYTPHIEXGzo