This is an original 1940s-1950s custom accessory pearl white shift knob, 1 7/8" in diameter, 1/2" hole in the bottom, does not have any threads, may need an insert. This has a great finish on it with no guffs or damage. The swirled and mottled pearlescent color on this is amazing, almost looks like white birds eye maple, perfect for a white pearl custom job, tuck and roll low rider style. This was found in an old farmstead building, ( Machine shed/shop) that was being t...orn down in Roscoe MN.