HI-Looking for Vintage Nascar race car inspection sticker-saw one on Rich Stuck's "57 Ford F-code
His is probably real!
may try Moon or Speedway
probably not what you are lookign for, but a neat sticker anyways.
(https://www.ecklers.com/media/catalog/product/cache/e8278bb62b6191f0a2c63cf38a3ced70/6/4/64-48791.jpg)
https://www.macsautoparts.com/decal-nascar-1957-49-48791-1.html (https://www.macsautoparts.com/decal-nascar-1957-49-48791-1.html)