6BL8 / ECF80
Top of the line triode pentode tubes manufactured in the United States by renowned Sylvania. These fine miniature glass tubes, designed for TV receiver service, come with 9 pin bases, solid internal structure and top getters. They are printed in white SYLVANIA MADE IN U.S.A. and glass etched 6BL8 ECF80 U.S.A. Boxes are standard Sylvania yellow and black printed 6BL8 ECF80. Photo is typical of available inventory.
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