(!!!) 6GM8=ECC86 Amperex Globe Holland NOS 1968 (3.9/4.8ma)
(!!!) 6GM8=ECC86 Amperex Holland NOS 1975 faded printing (4.0/4.5ma)
(!!!) 6GM8=ECC86 POPE Valvo Hamburg Germany NOS 1974 (4.9/5.4ma)
(!!!) 6GM8=ECC86 SIEMENS HOLLAND NOS 1970 (3.9/4.4ma)
(!) (Recommended Single) 6GM8=ECC86 SIEMENS HOLLAND NOS 1970 (4.0/5.0ma)
