(5) pack of JAN Sylvania 7308 pre-amp tubes from 1971. All are NOS/NIB. Tested on calibrated Hickok 539C and op checked for noise and microphonics in a working amp. Min transconductance is 7000 mmhos for this tester.Readings are supplied on the boxes, on stickers. Price is $45.00 per tube. Payment by Personal Check w/hold, MO (preferred), Cashiers check. PayPal “Gift” or PP + fees. Shipping is by USPS Priority Mail. Very well packed. Buyer pays Shipping/Insur. Contact me if interested. clumpster@earthlink.net Thanks for looking!
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