Fender Guitar Amp Power Indicator Bulb, #47 / T47 (Pkg 10)
Direct Replacement Bulb For Fender Amplifiers. Replacement For Most Ampeg, Danelectro, Gibson & Silvertone Amps #47 Dial Lamp, Fender Replacement, 6.3 Volts, 0.15 Amps, Bayonet Base,  Bulb: T-3