Both tubes are made in August 1972. Fully tested by calibrated Hickok 539C tube tester.With no shorts, leakage or gas. Where minimum good value is 7000. Strong and very tightly matched pair! Tested in my preamplifier to make sure working as intended with no issues at all. The tube(s) in this sale include a 30-day satisfaction guarantee.
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This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "ap1278" and is located in this country: US. This item can be shipped worldwide.