(!!!) (Best Holland Single) ECC85 Philips Miniwatt Holland Kuhl-Tube cryo NOS 1962 (9.4/11.4ma)
(!!!) (Recommended Single) ECC85=6AQ8 Philips Holland NOS 1970's (13.5/14.4ma)
(BEST SINGLE) ECC85 Siemens Halske Germany branded RCA NOS 1969 (13.6/15.6ma)
(!!!) (Best Single) ECC85 Siemens Germany NOS rebranded RCA 1967 (12/12ma) 1% section balance
(!!!) (Recommended Single) ECC85=6AQ8 Philips Holland NOS 1970's (11.6/14.2ma)
(!!!) (Best Value Single) ECC85=6AQ8 Philips Holland NOS 1975 (10/17ma)