Patek Philippe ref. 3970 – The Most Undervalued Perpetual Chronograph Posted on Dec 11, 2016Jan 22, 2020 Author Luca Musumeci Overshadowed Giant There is real opportunity with the Patek Philippe 3970, people are not really aware of that fact. It has long been agreed that the 3970 is perhaps the world’s most undervalued perpetual chronograph. Explanation? N...