Don is correct.......those deflectors claimed to fend off bugs, rain and
snow.......but really were not very effective. You could get them at
auto parts stores, probably filling stations, and I'd bet ol J C Whitney
likely sold a ton of em.
Back then, men liked to dress up their cars with things like fake
portholes, a swan on the hood ornament, mudflaps and all manner
of doodads. Supposed to make your ride look "uptown", "sporty", or
whatever they claimed. Another popular thing was the whitewall
rings for your tires.
Here are a couple other styles of deflectors, as found in a couple
ebay ads......
You can see the deflector in this picture............
And, a few Christmases ago, my son in law gave me that nifty set
of jeweled mudflaps. They were n o s, found down inside the wall
of an old filling station that was being demolished. Still in the original
box.
Guess I'll have to get a beanie..........don't have one of those.