Check the listing for details. 3 Vintage Bakelite Radio / Amp Control Knobs Cream with Chrome Ring 1950’s. Condition: Used. Listed at 16.00 USD. Vintage matching set of 3 control knobs, light cream color with chrome accent ring and molded pointer line. Early plastic (Bakelite or urea-formaldehyde), giving off that typical old formaldehyde odor when unsealed. Each measures about 1 ¾″ across x 1″ tall. Mold code 315B923 on reverse. D-shaft or set-screw style center mount (common on mid-century RCA, Zenith, and other hi-fi or test equipment). Good vintage condition overall — light surface wear from age, no cracks. Ideal for restoring 1940s–50s radios, amplifiers, or test gear.