PHILIPS
Platinum Matched Pair E188CC Philips 7308 NOS NIB 60s Two Tubes
Platinum Matched Pair E188CC Philips 7308 NOS NIB 60s Two Tubes
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Platinum Matched Pair (2 tubes) E188CC PHILIPS 7308
RARE Gray Shield, Dual Stage Getter, Gold Pins
NOS NIB: E88CC 6922 7308
Made by Philips in Heerlen tube plant in the 60s, Delta codes as shown on the photos. Different date codes!
This is Holy Grail of E88CC 6922 CCa 6N23P ECC88 6DJ8 E188CC 7308 tubes.
They are close serial numbers, the same etched codes. They are really closely matched, tested with 100V on anodes and -1.5V on plates on calibrated Tesla BM215A tester and the results are:
(18/19mA) (19/19mA)
These are real gems, low noise and microphonics tested in RIAA preamp and nicely selected and balanced by plate current.
