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> New 2 tubes = ge 5R4GYB nos brown base factory matching
New 2 tubes = ge 5R4GYB nos brown base factory matching
Factory Matching Pair of GE 5R4GYB Tubes
Quality NOS NIB NEW USA pair of GE 5R4GYB audio rectifier tubes. Factory matching codes on each tube ("NE 188-5"). Brown bases, Clear top, side-mounted round halo getter.
5-Star rating 5-Star rating 5-Star rating 5-Star rating 5-Star rating
5-Star Quality. All four diode sections tested strong NOS-NEW, uniform and balanced at "110" each section with my professionally calibrated Jackson 648A dynamic plate conductance tube tester, and also without shorts or leakage.
