One Excellent GE 6AF11 Tube NOS NIB Strong Triode/Triode/Pentode B&K 606 Results

(1) Tested GE 6JV8 Tube and Box Date Code NJ General Electric Triode Pentode (a)

(1) Tested Sylvania 6JV8 Tube with Box Date Code NR AAA Triode Pentode Tube

(1) Tested ITT 6X8 Tube with Box Date Code 1109 Japan Triode Pentode Converter

(1) Tested Sylvania 6JC8 Tube with Box Date Code NR EDF Triode Pentode Tube

(1) Tested GE 5X8 Tube with Box Date Code FV General Electric Triode Pentode

(1) Tested Westinghouse 6GH8A Tube with Box Date Code 70-22 Triode Pentode

(1) Tested Motorola 6X8 Tube with Box Code 62-26 Triode Pentode Converter Tube