Paul was browsing Facebook when he ran across this image from Moab, Utah, on the Canyon County Zephyr FB group page that includes this early 1950s Willys dealership sign (left side of image). You can see this sign in this 1952 signage brochure (WO11): http://www.ewillys.com/2021/02/13/1952-willys-signage-brochure/
There are some ads by this entity on Newspapers.com, but you’ll need a subscription to see them.