Matched Pair RCA 6CG7 / 6FQ7 Vacuum Tubes Valves With Shields And Anode Radiators NOS-Testing Lyre Harp Getters copper support rods and a

copper support rods and a tU4 B8A2 date/provenance code

Sorry about the boxes

There were no shorts or gas and they measured as follows:

new in box milspec RCA JRC-1L4 / 1L4 tubes tested to spec on our Paul Hart-calibrated TV7/U

and if it is

Matched Pair RCA 6CG7 / 6FQ7 Vacuum Tubes Valves With Shields And Anode Radiators NOS-Testing Lyre Harp Getters copper support rods and aThis new old stock testing matched pair of RCA Hazy Top 6CG7 6FQ7 dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and transconductance measured as follows: Tube One: 72 78 Tube Two: 76 77 Bogey: Minimum (65%) is 50 50; 100% is 77 77 Physical Characteristics: Bases: N A Bottles: tall Date Codes: none EIA Factory Codes: none Getters: mid bottle, D Flashing Quality: excellent