(!!!) (Best Value Single) ECC85=6AQ8 Philips Holland NOS 1975 (10/17ma)
(!!!) (Recommended Pair) ECC85=6AQ8 RCA Heerlen Holland NOS 1968 (21/16.5ma and 18.5/15.5ma) (close Gm)
(!!!) (Single) ECC85 Siemens Germany NOS 1962 (9.5/8.2ma)
(!!) (Best Value Single) ECC85=6AQ8 RCA Canada NOS 1970's (12.6/11.0ma)
(!!) (Good Value Pair) ECC85=6AQ8 RCA Japan by Hitachi 1970's (10/15ma and 10.4/14.4ma)
(!!) (Recommended Single) ECC85 Siemens Germany NOS rebranded RCA 1969 (16.5/14.5ma)
(!) (Good Value Single) ECC85 Siemens Halske Germany branded RCA NOS 1969 (9.2/8.6ma)
(!) (SINGLE) ECC85=6AQ8 Sylvania black plates NOS 1960's (10.2/10.4ma)
(!) (SINGLE) ECC85=6AQ8 Sylvania black plates NOS 1960's (12.2/9.8ma)
(!) (SINGLE) ECC85=6AQ8 Sylvania black plates NOS 1960's (8.4/14ma)
