(1) Tested Tung Sol 5U8 Tube Date Code KA3 Triode Pentode Tube

TUNG SOL 6BA8 A TUBE SUPER SWEET SINGLE NOS NIB ORIGINAL BOX

(1) Tested RCA 5AN8 Tube with Box Date Code KQ Triode Pentode Tube

(1) Tested Tung Sol 6X8 Tube with Box Code KR3 Triode Pentode Converter Tube

(1) Tested Sylvania 6CU8 Tube with Box Date Code am YAD Triode Pentode Tube

(1) Tested Tung-Sol 6AW8A Tube Date Code PRI 6AW8 A High Mu Triode Pentode

(1) Tested Tung Sol 6CY7 Tube with Box Date Code PW-E Dual Triode Tube

(1) Tested RCA 6AU8 Tube with Box Date Code KQ Triode Pentode Tube