Unity Spotlight bracket i.d.

Hey Guys, can anybody identify this Unity spotlight mounting bracket??

 

i have a question related does anybody know how to idetify what model unity spot light it is?

 

Start with the Unity site. It is extremely annoying to navigate, but it has a history section with parts drawings of a number of models and bracket listings for many cars back to much older than your light. I think all Unity brackets have a number, badly cast in and generally not very clear, on the unmachined part of the bottom.