5 1963 Telefunken 12AX7 ECC83 Diamond The Fisher Vacuum Tubes Matched Date Codes

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Quantity 5 Telefunken 12AX7 ECC83 Diamond The Fisher Vacuum Tubes 1963 Matched Date Codes.These 12AX7 ECC83 vacuum tubes are branded The Fisher and were manufactured by Telefunken (West Germany, with diamond base). They are from a 1963 The Fisher Stereo console tuner. All have the date code of JO.The white markings are in good condition on 4 of the 5 tubes and mostly erased on the 5th tube. The photos clearly show the marking condition. I lightly cleaned the tubes around the markings and didn't clean over the markings to avoid any chance of erasing the lettering.The tubes test strong and nicely balanced on my Hickok 533 tube tester. The tester is uncalibrated, but I have found it to be accurate when testing 12AX7's. The tubes are numbered 1-5, my marking can readily be removed with a little Windex.Test results (after 1 minute of tube warmup):Tube # Results Side 1 Results Side 2 1 1150 1160 2 1160 1160 3 1250 1250 4 1160 1150 5 1180 1170Purchase with confidence, the tubes may be returned within 30 days for a full refund (including all shipping costs) if you are not fully satisfied. Please make the decision to return the tubes before removing my hand written number or any of the Telefunken markings.Combined shipping is available.The tubes will ship using USPS Priority Air and will require a signature at delivery.See my ebay seller read more