(!!!!) (Best Overall Pair) 407A Western Electric like new 1965-1966 (46-47/26 and 47-48/26) (Highest Testing Pair)
(!!!) (Recommended Pair) 407A Western Electric like new 1966-1967 (40-45/26 and 40-48/26)
(!!!) (Recommended Pair) 407A Western Electric used/very good 1961-1964 (40-41/26 and 38-40/26)
(!) (Best Single) 407A Western Electric tests like new 1960 (42/26 and 50/26)
407A LM Ericsson Sweden like new 1960's (41/26 and 42/26)
407A LM Ericsson Sweden used/good 1960's
407A Sylvania branded RCA gold pins used/good 1971
407A Sylvania branded RCA NOS 1977
407A Sylvania gold pins used/good 1960's
407A Western Electric like new 1968 in white box (54/26 and 64/26)
407A Western Electric used/good 1959
407A Western Electric used/good 1967
407A Western Electric used/good 1972
407A Westinghouse Canada NOS 1960's
407B Western Electric NOS 1968 (50/26 and 51/26)
GB-407A Sylvania Gold Brand gold pins like new 1960's
GB-407A Sylvania Lenkurt Gold Brand gold pins used/like new 1960's
