6CU5 Sylvania Beam Power Pentode Vacuum Tube - NOS - TESTED

6CU5 Zenith Beam Power Pentode Vacuum Tube - NOS - TESTED

VINTAGE SLEEVE OF 5 NOS RCA 6GU5 PENTODE BEAM POWER VACUUM TUBES

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

6AS5 RCA Beam Power Pentode Vacuum Tube - NOS - TESTED

Vintage RCA 6EZ5 Vacuum Tube NOS – Beam Power Pentode – Radio/TV Output – NIB

6AG5 RCA Sharp-Cutoff Pentode Vacuum Tube - NOS - TESTED

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