You can always surf ebay, Craigslist and Face Book Marketplace for used ones for sale. I recently found an original used Peckat exterior visor for my '51 3100 for a really reasonable price. It sat in the fellows garage for the past 40+ years after he sold the truck he bought it for and finally decided to part with it.
The same one I found might even fit your COE.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)