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(!!!!) (Best Single #1) 12AX7=ECC83 Philips Miniwatt Holland ribbed plates NOS 1965 (1.4/1.3ma and Gm=1900/1900) 1-2% section balance
EL84 Siemens Halske Germany NOS 1967 (45ma)
EL84 Siemens Halske Germany used/70% 1969 (34.5ma)
EL84 Siemens Halske Germany used/tests like new 1971 no printing (48.2ma)
