(!!!!!) (Best Siemens Pair mid-1960's) 6922=E88CC Siemens Halske Germany branded Amperex gray shield NOS mid-1960's (16/17ma and 16.2/18ma)
(!!!!!) (Best Siemens Single 1969) 6922 Siemens Halske Germany NOS 1969 (16.6/18.4ma) (High Ma and Gm)
(!!!!) (Good Value Single) 6922=E88CC Siemens Halske Germany gray shield used/good 1964 (11.4/12ma)
(!!!!) (Slightly microphonic Single) 6922=E88CC Siemens Halske Germany gray shield NOS 1965 (A0 Series=1st series) (15.2/15.8ma)
