Patek Philippe Rare Steel Dress Watch Blue Dial Ref 3579This is a very rare and cool Patek Philippe steel dress watch, reference 3579, produced between 1969 and 1974. This period was an interesting chapter in Patek Philippe's history, predating the famous Nautilus, and it is believed this model was made for the Japanese market. The choice of stainless steel. a material not typically used by Patek Philippe except in sportier models, we believe makes this watch quite unique and desirable! The steel 33mm