Hi Alimo88,
I sold these detectors and they were made here in Perth. The 400 was the first model made with a few more models after that. The very first detector which was developed early in the gold rush was the Bridge Wright and their was plenty of knockers who said the detector was no good. But once you learned how to set the detector up it was the ancepants. I used that detector around dunnolly Tarnagulla, Inglewood, Kingower etc, and found some good gold,
Regards Beepn.