5749=6BA6W RCA NOS 1960's in white box (8.6ma)
GB-5749=6BA6W Sylvania Gold Brand NOS 1960's (9.2ma)
JAN-5749=6BA6W Sylvania NOS 1969-1970 (10ma)
JHS-5749=6BA6W Sylvania NOS 1958 (9.2ma)
