Very Rare Amperex/Philips 12AX7/ECC83 17 mm Long Plate D-Getter with Foil Strip Made in Holland. Label is erased. Rare and Legendary D-Getter with Foil Strip 17 mm Long Plate Version. Date Code: Delta 7C Made in March 1957 in Heerlen Holland. Fully tested by calibrated Hickok 539C tubes tester with no shorts, leakage or gas. Measurement: 1780/1780 where minimum good value is 875 Very strong at NOS range! Tightly balanced triodes! Tested in my preamplifier to make sure working as intended with no issues at all. I will gladly combine shipping upon request.
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