Most of the late 40s early 50s cars that had the cowl placement antenna will all be able to use the same type. I've purchased several decent aftermarket antennas off flea-pay that were manufactured in the 50s and still new in the packages. They look and fit just like the OEM antenna. Mac's and probably other vendors sell cowl mount types that will do the same job. P/N BAAA-18813-A comes to mind. I think it was made to fit the Mercs better.