After posting the "Coach" c&s I remembered that I have another unknown chip that was also delivered to the Rayl Co, Detroit, MI (1928).

This must be the symbol of a tire manufacturer or auto co. Can anyone identify the symbol on the chip.

There may be a connection with the Firestone Tire Co.

I'd most certainly love to know what the "wKs" means. (Maybe a personal set of the president of the Firestone whose initial would be WSK??)

May our resident internet maven, Debbie Meister, could perform her magic.