Mullard Magic: For All Your Vintage Valve and Radio Needs!
5R4GY, RCA, BROWN BASE, SMOOTH ANODE, APRIL 1944 PRODUCTION
5R4GY, RCA, BROWN BASE, SMOOTH ANODE, JUNE 1953 PRODUCTION
5R4GYB RCA HARRISON T9 ENVELOPE
5R4WGA, CHATHAM ELECTRONICS, JAN-CAHG, BLACK LADDER ANODE,
6X5GT, BRIMAR, BLACK BASE, ORANGE PRINT 6X5