These are geniuine Philips ECC81 12AT7, Made in France , ring getter, single plate hole and Tk2 F3I5 codes. Made in September 1963 in Suresnes plant, Radiotechnique.
I have seen many of them labeled Amperex Bugle boy 12AT7 ECC81.
Perfectly matched pair within 1%!!!
In original boxes
More then 300 pieces in stock!!!
ECC81 Phillips 12AT7 Miniwatt double triode, made in France
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