Any idea what this horn cap came from?

[johnymac]

This horn cap came out of the truck I bought 67 C10 stepside.
Several of the plastic tabs are broken, so doesn't fit in the wheel so good anymore.

I like the style of the cap, so like to find one like it someday. This one is pretty pitted. Looks like the white plastice that attaches inside the wheel can be replaced. I see the 67 replacement caps have a black rubber that attaches the cap to the wheel, so this looks very unorginal to me.

I ordered a cap when I got the truck and what I recieved was the plane chrome cap that proabaly came with a 67 c10. I thought the cap I had was an original, shows how much I knew when I got into this hobby.

So anyway trying to figure out what I have here. Perhaps a car cap?

Oh yeah, there are no casting numbers on it.