One of my coworkers had several very old trucks hauled away this weekend. His stepfather told him they were all from the 1950's or earlier. On one of them the truck had only 1 hubcap, and he said it had a sailing ship design on it. He said it looked very nice. Does anyone know if this was a standard or custom hubcap, and if it came like that what make of truck was it on? He said the trucks were all heavily rusted and had no identification he recognized. Thank you.

Plymouth ?

Possibly Plymouth. They sold pickups from about 1937-42.