Philips 7025A / 12AX7A Vintage Preamp Vacuum Tube Tested Great Britain
Vintage Philips 12AX7A preamp tube, used, in very good working condition. Backwards “3” factory code denotes Marconi/Chelmsford, Great Britain production from Mullard stock. This tube was taken from a functional unit and has tested good on a Sencore TC162 Mighty Mite VII tube tester. In very good shape with some minor cosmetic signs of use (see photos).
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