that seems to be an old "Siemens&Halske" capacitor, with 6.6nF or 6600pF and a tolerance of +/- 5%. can you measure the value, to confirm?
I only have multimeter that cant measure capacitors with me now. But seems to be correct, the diagram states 7nf.
I have another questions. I have Schou transformer 0.32m 251. It is primary 1,5 to secondary 200k. These transformers are used with small circuit because the high impedance. There is 40k resistor after the transformer and a high filter attenuator. What output impedance will it leave me with? Picture shows the circuit.
