Raytheon JAN CRP-5687WA NOS Tubes, Closely Matched Pair

2 x JAN CRP-5687WA Raytheon NOS Tubes, Closely Matched Pair Both tubes are from the same batch and date code (1963) Black Plates, Double mica These are new tubes (not used, except on a tube tester).  They are listed it as "9/10" to be very conservative as these vintage tubes are stored for over ...

2 x JAN CRP-5687WA Raytheon NOS Tubes, Closely Matched Pair Both tubes are fr...