(1) Tested GE 6AU6A Tube with Box Red Letter 6AU6 A Sharp Cutoff Pentode Tube

GE 6AU6A Tube TESTED 98 NOS Strength Sharp-Cutoff Pentode Original Box 6AU6

6AU6 A TUBE GE TESTED & BOXED VINTAGE COMMERCIAL SURPLUS

(1) Tested GE 6BN4A Tube with Box Code FV General Electric Medium Mu Triode Tube

GE Electronic Tube 6T8A Not Tested No Box

(1) Tested GE 6CU8 Tube with Box Code EZ General Electric Triode Pentode (a)

6GJ5 A TUBE GE NIB TESTED & BOXED VINTAGE COMMERCIAL SURPLUS

(1) Tested Very Strong GE 6DA4A Tube & Box Date Code KV General Electric 6DA4 A