Balanced Matched Pair/Set of 3 Sylvania 6080 Black Plate Halo Getter Tubes 6AS7

Early Soviet 6H13C Tube OTK2 XI 69 Upgrade 6N13P/6N5P/6H5C/6080/6AS7

GE 6080 Vacuum Tubes Matching Codes Black Plate NOS NIB

NIB Matched Pair Balanced Sylvania JAN 6189W Tubes (12AU7 ECC82)

12AU7WA 6189 ECC802S NOS RCA USA TRIPLE-MICA BLACK PLATE BALANCED MATCHED PAIR

NOS NIB Philips JAN 5814A Platinum Matched Pair Preamp Tubes Case Fresh = 12AU7

RCA 6AS7G NEW OLD STOCK ELCTRON TUBE

1959 Sylvania 12AU7 PLATINUM GRADE Preamp Tubes Matched Pair 90% NOS ECC82 6189