Hot Rods mirror bracket

hi would anybody know where to buy these mirrors or the brackets

 

Chrome shop at the truckstop?,maybe try a bike shop.or even a RV store.

 

A motor"bike" maybe but the other vendors tend to have larger side mirrors.
I "Google searched" the image hoping for a backdoor to a source but the image just leads to a for-sale listing for that car in Fredericksburg, Texas.
Those "brackets" seem to be basic enough that anyone with standard machine shop tools and skills could fabricate something like 'em fairly easy.

 

I'm thinking home made bracket and a mirror head.

 

Here's a couple threads I have saved, planning to make some.
https://www.fordbarn.com/forum/showthread.php?t=112968&highlight=34+cowl+light+mirrors


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https://www.jalopyjournal.com/forum/index.php?threads/1021659/

 

thanks for your replys