4 (FOUR) brand new dial lamps for most 1930's - 1940's antique radios that use a BA9S bayonet base dial lamp. It will also replace pinball lamps and fender amp lamps. 1.25W T-3-1/4 See our other listing for screw style based bulbs.4 (FOUR) brand new dial lamps for most 1930's - 1940's antique radios that use a screw E10 base dial lamp. It will also replace pinball lamps and fender amp lamps. 1.5W T-3-1/4 See our other listing for bayonet style based bulbs.