Best quality double diode triode tubes manufacture in USA/Canada by renowned Sylvania. These fine 7 pin miniature glass tubes, latest version of 12AV6, come with clear tops, side getters, and are glass etched 12AV6 CANADA. They are printed in yellow SYLVANIA 12AV6A with various production codes, and boxed in standard Sylvania yellow boxes printed 12AV6A.
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