(!!!!!) (Best Single) 5687 GE 5 Star NOS 1973 (37.5ma/33.5ma) (Audio Note, Modwright)
(!!!!!) (Best Value Pair) JAN-5687WA Sylvania black plates used/test like new 1967-1970 era (43.6/47ma and 46.8/44.2ma) (Highest Ma and Gm)
(!!!!) (Best Single 1961) 5687 GE 5 Star NOS 1961 (33ma/37ma) (Audio Note, Modwright)
(!!!) (Good Value Pair) JAN-5687WA Sylvania used/very good 1960's (35/35.6ma and 34.8/35.5ma)
(!!!) (Good Value Pair) JHS-5687WA Sylvania used/very good 1960's faded printing (35.4/34.2ma and 37.0/36.5ma)
(!!) (Best Value Single) JAN-5687WA Raytheon bronze plates used/tests like new 1969 (41.5/43.5ma) (High Ma and Gm)
(!!) (Good Value Single) JRP-5687WA Raytheon bronze plates used/good early 1960's (33/31.6ma)
(!!) (Recommended Single) JAN-CRP-5687WA Raytheon black plates tests like new 1962 partiailly faded printing (33.2/35.4ma)
(!) (Best Value Single) 5687WA Sylvania JAN used/good faded printing 1970's (31/35.8ma)
(!) 5687 Raytheon part bronze part black plates used/tests like new 1960 (33/38ma)
(!) JAN-CRP-5687 Raytheon black plates used/very good around 1960 (33.5/37.6ma)
(slightly microphonic) 5687 Raytheon black plates NOS "square" getter halo 1950's (37/39ma) (strong Ma and Gm)
5687WA Sylvania JAN used/tests like new 1960's (39/43ma) (high Ma and Gm)
JRP-5687WA Raytheon black plates used/good 1965-1966 (28/31ma)
JRP-5687WA Raytheon bronze plates used/good 1960's (34.6/36.4ma)