Patek Philippe launch the Reference 3580 in 1972 and discontinued in 1980. Possibly less than 500 pieces produced in 8 years. The refernce 3580 is a watch unlike any the brand had created at the time, and certainly remarkably dissimilar to any modern watch that they produce today. Emerging from the creative design era that was the 1970s, the ref. 3580 spans borders Patek traditionally would not cross. Made of stainless steel, a rather unusual material for Patek to use. It is very rare to find the Patek philippe wristwatch made in stainless steel during that era .