All the old Telecaster lead and rhythm pickups I've seen have been wound top left, top coming in other words the coil was wound counter-clockwise around the bobbin. When measuring the magnet polarity at the top of the lead and rhythm pickup, I have seen them both South or North. Eventually they both became standard South on top. When the switch was placed in the non-standard 2nd position, one pickup had a South polarity and the other had a North polarity which made them magnetically out of phase since they were both wound in the same direction. This didn't always happen in the non-standard 2nd position but on some instruments it did.