(!!!) (Best Value Pair) 866A RCA like new 1956-1959 in white boxes (60-62/40 x 2 tubes)
(!!!) (Best Value Pair) NL-866A National USA NOS 1999 (58/40 x 2 tubes)
(!!!) (Recommended Pair) 866A GE NOS 1971
(!!!) (Recommended Single) 866A RCA tests like new 1956 (58/40)
(!) (SINGLE) 866A GE NOS 1971 (2 in stock)
(!) (SINGLE) 866A GE NOS 1971 (54/40)
(!) 866A GE NOS 1974
866A GE low hours/like new 1940's
866A=VT-46A RCA NOS 1942 (62/40)
866AX Amperex France brown base 1965 tests like new, a few scratches on base, reboxed
866AX Amperex Holland black base NOS 1960's (54/40)
