That style of enameling dates back to ancient times, and is still made today. The Chevrolet logo looks older...what time periods had the bars above and below the name?
Is it possible the badge was adhesive and the adhesive backing has been removed so it doesn't stick to everything? I know current cars nameplates are just held on with adhesive, but I don't know when that started.
Is it possible it was never attached to a car and instead used as, say, a paperweight on the salesman's desk? There are many variables that I simply don't have the knowledge to piece together or rule out.