12AX7 A 12AX7A Tubes RCA/Hewlett-Packard NOS Pair ~ Test Strong
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12AX7A Tubes RCA/Hewlett-Packard NOS Pair ~ Test Strong This pair of new old stock 12AX7A 9-pin miniature dual triode tubes have been stored away for years. Made by RCA in the U.S.A., branded Hewlett-Packard, "Sanborn Division". These have short grey ribbed plates, round getter halo. Red printing is good, dated 74-48. Packed in H-P labelled cardboard tubes, part number 1932-0055 and 1932-0065. Tubes tested as strong on both triodes on my Hickok tester: 1250/1400 and 1400/1400 in mutual conductance where 1250 each triode is average new, no shorts. Price is for two pieces. California residents add sales tax. I will try to answer any questions via email. Thanks for looking!
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