Nevertheless, it seems that they manufactured (or possibly had manufactured for them?) a number of germanium transistors. The 1962 D.A.T.A. book lists:
- ES3110 to ES3116
- ES3120 to ES3126
The D.A.T.A. Book of Discontinued Transistors 1969 lists these and also includes:
These are all germanium PNP alloy transistors, and seem to be general-purpose types. The ES311x ones use the TO-23 can, the others TO-5. I cannot find images of these, with the exception of ES3123 which is listed on the superb radiomuseum site.
I would be interested to obtain some examples of these series for my collection. If you know where I can get some, or just can provide more information about them, please