Here are 3 Ivory colored plastic radio knobs probably from the 1940`s or 1950`s.. I do not know what brand of radios these are from. They have no cracks or chips and they have their metal inserts. They will fit the 1/4 inch half shaft and they are about 1 inch in diameter and about 5/8 inches high. USA USPS 1st class shipping is . USPS International 1st class shipping is .