NOS RCA 6AU6A radio tube in original box,tested strong!,6AU6

NOS Raytheon 6AU6A radio tube in original box,tested strong!,6AU6

NOS Westinghouse 6AU6A radio tube in original box,tested strong!,6AU6

Lot of 4: 6CL6 6CL6A Pentode Tubes Mixed Brands TESTED 118 & 111 NOS Strength

NOS Westinghouse 6AU6 radio tube in original box,tested strong!,6AU6A

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

NOS Sylvania 6AU6WA radio tube in original box,tested great!,6AU6A,6AU6,military

NOS Sylvania 6AU6WB radio tube in original box,tested great!,6AU6A,6AU6,military