David,
Hope you can dig up the info. Would apreciate it very much.
The very fine wire is yellow copper also. Was telephone wire or coil windings from small electric motors not red copper wire? I used to break up some of that stuff in my younger years with friends in an attempt to do some technical time spending

I cann't remember seeing yellow copper wire in those things then.
Your age guess could be very correct. It would surprise me if this one is much older.
Thanks and regards, Henk