Patek Philippe Nautilus 3700/1A

The first Nautilus was produced for about six years starting in 1976. The 40mm case, which was large for its time, was nicknamed "Jumbo" because its successor, the Ref. 3800, was reduced to 37.5mm. The caseback and case are one piece in a two piece construction, with a screw down mechanism that engages with the ears on both ends, and despite being 7.5mm thin, the watch is water resistant to 120m. This is a rare watch with a three piece construction, which is the norm today, except for a few. Year Circa 1977 Model Name Nautilus Reference No 3700/1A Case No 533*** Calibre Automatic Cal.28-255C Material Stainless steel Bracelet/Strap Patek Philippe stainless steel clasp Clasp/Buckle Patek Philippe stainless steel clasp Box Yes Papers No Size Max length170mm Case diameter38mm Accessories Accompanied by Patek Philippe Archive August 23, 2024. and box.