Customs 1960s after market mirrors

I picked these mirrors up the other day at a garage sale. The price was right. Ive never seen any quite l like them before. Has anyone else?

 

Never saw those before. Looks like they use a circular mount of sorts that has some kind of indexing pin so the angle can be changed. Maybe from the Jetson's vehicle?

 

Those are pretty Special! You might find something similar in an old J.C. Whitney catalog.