5814A / 12AU7 GOLD BRAND
Rare top quality double triode preamp tubes manufactured in the United States by Sylvania. These fine 9 pin miniature glass amplifier tubes come with gray plates, thick copper posts, and top getters. They are printed in gold GB 5814A SYLVANIA MADE IN U.S.A. GOLD BRAND with several digit production codes. They are also glass etched GB 5814A U.S.A. Boxes are Sylvania gold, black and white, printed GB 5814A.