(!!) (BEST PAIR) JAN-CRC-1619 RCA NOS 1952 (55ma and 56ma)
(!!) (BEST PAIR) JAN-CRC-1619 RCA NOS 1956 (54ma and 53.5ma)
(!) (BEST 1619 PAIR) JAN-CRC-1619 RCA NOS 1952 (1 pair: 51ma and 50.5ma) (matched on Amplitrex)
(!) (BEST 1619 PAIR) JAN-CRC-1619 RCA NOS 1952-1953 (1 pair: 51ma and 52ma) (matched on Amplitrex)
(!) (BEST 1619 PAIR) JAN-CRC-1619 RCA NOS 1952-1953 (1 pair: 53ma and 55ma) (matched on Amplitrex)
(!) (BEST 1619 PAIR) JAN-CRC-1619 RCA NOS 1956 (1 pair: 47ma and 47.5ma) (matched on Amplitrex)
(!) (BEST PAIR) JAN-CRC-1619 RCA NOS 1952 (56ma and 57.5ma) (matched on Amplitrex) (tests the highest)
(!) JAN-1619=VT-164 RCA NOS 1943 (1 pair: 55ma and 57ma)
1619 GE NOS 1960 (56ma)
1619 Ken Rad NOS 1940's also stamped 1953 (56ma)
1619 RCA branded National NOS (52ma)
1619 RCA NOS 1956 made for Marconi Canada (1 pair: 53ma and 58ma) (matched on Amplitrex)
1619 RCA NOS 1958 made for Westinghouse Canada (1 pair: 54.5ma and 56ma) (matched on Amplitrex)
1619 RCA NOS 1965 (1 pair)
1619 RCA NOS 1975-1976 (1 pair: 49.5ma and 52ma)
JAN-CRC-1619 RCA NOS 1952 (52ma Gm=4600)
