Hard to say. Many were were so similar, they were just about universal. Maybe the brackets set them apart? Before the haters start: nothing wrong with visors. They are not for everyone, but can look good.
At this point, the only way is to test fit. They are likely to "fit" more than one car and fit 'good enough' a few more. I would think knowing the application make them worth a little more..... so not knowing must be the opposite. Including all the mounting hardware as a package should attract more dollars and more buyers, too. So, if you got them as cheap unknowns and they happen to fit what you've got....... you're golden.
The white one looks like 49-52 ish.. Chevy to me, but should have a bracket in the middle that attaches to the split windshield trim.
I believe the visors were made by FULTON and LARSON, and possibly other name brands too, here are a few examples of the ones for split windows and one for a one piece windshield, the ( Oldsmobile ).
41 GMC is correct. The ones with the bracket (brace) in the middle worked with split windshields, which fit many cars of the 30's and up into the 50's. Here is one on my '46 Chevy..
The Jalopy Journal
