Thanks for the help everyone,
the chassis parts catalog shows two type of air cleaners for the '37 3C, a Burgess Air Cleaner (P/N #190121) and a AC Air Cleaner (P/N #190437). After the information shared, I would think the original decal was for a car after the 1954 merger. I don't know, maybe someone with a '54 or later can share. Studebaker-International (https://www.studebaker-intl.com/catalog_pdf/fuel.pdf) has the decal I shared on page 188, for maybe a '53-54 Champion and Commander.
Overall, the most important part is keeping another '37 3C on the road and enjoying the drive.
Cheers
Will