Mullard Magic: For All Your Vintage Valve and Radio Needs!
5Y3GT, BRIMAR, WHITE BOX, 5Y3GT/G, CV1856, U50, VT-197A,
5Y3GT, SYLVANIA NIB, 5Y3GT/G, CV1856, U50, VT-197A,
5Y3GT, VARIOUS, WHITE BOX, 5Y3GT/G, CV1856, U50, VT-197A,
5Y3WGT, SYLVANIA 5Y3GT/G, CV1856, U50, VT-197A,
5Y4GT MARCONI, NIB, 5Y3GT/G, CV1856, U50, VT-197A,