THEY USED A BLACK OR CREAM COLORED CENTER KNOB. CAME OFF THIS RADIO AND LIKE CHASSIS, ALL ORIGINAL. Use red slider bar for more. This item is in the category "Collectibles\Radio, Phonograph, TV, Phone\Radios\Tube Radios\1930-49". The seller is "bcoolradios" and is located in this country: US.This item can be shipped to United States, Canada, Bahamas, Uruguay.