VINTAGE NOS RCA 6HB7 VACUUM TUBE TUBES USA TESTED TUB23081

RCA 6AU8A TRIODE/PENTODE VACUUM TUBE ~ NOS, TESTED

RCA 6BQ7A 6BZ7 6BS8 Vacuum Tube NOS Dual Triode Tested TV-7 Vintage USA

5CG8 RCA Medium-Mu Triode Sharp-Cutoff Pentode Vacuum Tube - NOS - TESTED

SYLVANIA 6HB7 TRIODE PENTODE NOVAL VACUUM TUBE NIB NOS TESTED EXCELLENT

6AU8A RCA Triode-Pentode Vacuum Tube - NOS - TESTED

6AW8A RCA Triode-Pentode Vacuum Tube - NOS - TESTED

NOS/NIB RCA 6SN7GTB Dual Triode Vacuum Tube - Tested