A Telefunken-labelled E88CC that was actually built inside the Philips group, with the early D-getter construction and the etched codes to say where it really came from. Sold on what it is rather than on what the label says.
Tested on the Tesla BM-215A. Both sections tested strong, reading well above minimum.
E88CC ~ 6922 ~ CCa ~ CV2492 ~ 9622 ~ GL-6307
The ECC88 and 6DJ8 are the same tube in standard commercial grade rather than Special Quality. The 8416 differs in heater rating and is not a substitute.
The E88CC came out in 1956 for computer and cascode work, its frame grid holding the grid to cathode spacing far tighter than a wound grid allows, and the CC suffix marking Special Quality: closer tolerances, longer rated life and testing well past what any consumer valve received. Cross-labelling was ordinary practice in the period, and glass moved between the European houses more freely than the printing on the outside suggests, which is why the etched codes on the stem bottom are the only reliable record of where a valve was actually built. Here they read a Hamburg factory letter, so what you are buying is Philips group manufacture under a Telefunken label, which is a real and collectable thing in its own right and a good deal more affordable than the genuine article. The D-getter belongs to the earliest run of the type, before the ring and disc getters that replaced it.
A D-getter E88CC with gold pins, testing strong, at a fraction of what the diamond costs. Buy the valve, not the printing.
SKU: 384