(!!!!) (Best Pair) 7189 Sylvania black plates NOS 1970 era (42ma and 46ma)
(!!!!) (Recommended Pair) 7189 Sylvania black plate NOS 1970 era (46ma and 47ma)
(!!!!) (Recommended Pair) 7189 Sylvania black plate NOS 1970 era (51ma and 53.5ma)
(!!!!) (Recommended Pair) 7189 Sylvania black plate NOS 1970 era (58.5ma and 60.5ma)
(!!!!) (Sweet Sounding Pair) 6BQ5 RCA NOS 1969-1970 (35.5ma and 36ma)
7189 Amperex Japan NOS misbranded 7189A NOS 1970 (48.5ma)
7189 Sylvania gray plate NOS 1960's (52ma)