5 5V3 SYLVANIA Black Plate HiFi Radio Amp Vacuum Tubes Matching Code MCA NOS

5 5V3 SYLVANIA Black Plate TV HiFi Ham Radio Amplifier Vintage Vacuum Tubes Matching Codes MCA NOS. Tubes Tested on a TV-7D/U Tester. Tubes Test New, Strong & Balanced 48-48, 48-48, 48-48, 48-48 and 48-48.