(!!!) (SINGLE) ECC81=12AT7 Telefunken Germany <> bottom NOS 1965 (10.6ma/9.2ma)
(!!!) (~ Recommended Pair ~) 448A Western Electric tipped top used/good 1965-1966 (28ma and 29.2ma) (Matched on Amplitrex)
(!!!) 6336 Chatham metal plates used 1954 (59/74ma)
(!!!) 6336 Chatham metal plates used 1957 (57/53ma)
(!!) (BEST PAIR) 6EU7 GE NOS 1970-1978 (46-47/32 and 47-47/32) 1-2% matched
(!!) (Recommended Pair) 5963=12AU7 Sylvania NOS 1960's (9.8/10ma and 10.8/9.8ma)
(!!) (SINGLE) 5963=12AU7 RCA NOS 1965 (10.8/13.2ma)
(!!) (SINGLE) 5R4GYB RCA NOS 1963 large getter (48/40 and 50/40)
(!!) (SINGLE) 6BM8=ECL82 Philips Miniwatt Holland made in Belgium NOS 1962 (2.0ma/41ma)
(!!) 12AT7 Knight by Mullard NOS 1966 (8.8/9.4ma)
(!!) 5963=12AU7 RCA NOS 1963 (9.2/9.6ma)
(!!) 5R4GYB RCA rebranded Raytheon NOS 1960's (50/40 and 53/40)
(!) (Best Value Single) 5687WA Sylvania JAN used/good faded printing 1970's (31/35.8ma)
(!) 6DJ8 Brimar England NOS 1960's (13.0/14.3ma)
(!) 6DJ8 Brimar England rebranded IEC Mullard NOS 1966 (11.4/11.6ma)
(!) 807 Mullard UK rebranded GE NOS 1967 (71ma)
(!) 807 Mullard UK rebranded Sylvania NOS 1966 (81ma)
(!) JHS-0A2WA Sylvania used/test like new 1966 (1 pair)
328A Western Electric "small punch" NOS 1953 (5.5ma)
328A Western Electric small punch plate used/good 1953 (4.6ma)
