Double Bass Schaller double bass pickup. As built?

[Giampi]

Ciao friends! Has anyone opened a Shaller 411 10/70 double bass pickup and has a picture (or can you explain to me how the coils are made?). I wouldn't want to open mine so as not to do danji (it's siliconized), but I'm really curious. I understand that the screws are magnetic .... (sorry my English. But it's only the fault or thanks to Google translator )

 

[DoubleMIDI]

The screws are ferromagnetic ceramic. The coils are wound around the metal part holding the ceramic. These are single coils which means sensitive to electromagnetic noise. (Humbucker pickups with two coils wound in different directions are far less sensitive to this kind of noise but color the sound more than single coils (as far as I can remember).