Description: OEM Chevrolet threaded hubcap grease cover for spoked artillery wheels. Made of pressed aluminum. Chevrolet started production in 1911, founded by Billy Durant before he created General Motors. I assume this from the late teens or early 20s but do not know exact year, model, or application.
Dimension: 3 7/16" wide by 1 3/4" high, 2 3/8" threads.
