Investment casting (which is how the handle is made) would be very expensive for small runs, and I suspect the shape could be too complex. For a short run I think CNC machining is the way to go.

Got a 3D CAD model of the faceplate Rob??

As it happens I do - SolidWorks or IGES. If someone had a serious proposition about machining some of these, then I would be willing to talk about that.

Rob