EABC80=6AK8 Amperex Italy used/strong 1963 (1.0ma)
EABC80=6AK8 Philips Italy branded RCA Germany NOS 1969 (1.3ma Gm=1500)
EABC80=6AK8 RCA by Siemens Germany NOS 1967 (0.7ma Gm=1200)
