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PATEK PHILIPPE
Nautilus 3700 CHECK LIST
Below is a quick « check list » of what you should be looking at when considering a Nautilus ref. 3700. One -if not the very best- complete study to learn more about this fabulous reference was written by « mstanga » called « A study of the Patek Philippe ref. 3700 Nautilus »
It is estimated that 4800 Nautilus ref.3700 were produced of which 3500 of the large bracelet /01A and 1300 of the slimmer bracelet /11A.
When buying check:
Reference /01A or /11A: telling how large the bracelet is. Check if bracelet is standing up alone straight or collapsing. Are the links thick or thin (polished). Original had 23 links but it is fine for most wrists from 18 onwards.
Dial: At 6h « σ SWISS σ » from 1976 to 81, « •σ SWISS σ• » from 1981 to 1990, « SWISS » for replacement dials, GENEVE or GENÈVE, minute track with batons (1st series 1976-77) or dots (1977-90), any mark on the dial (search with daylight an angle for any spot/stain).
Bezel: how polished? Is the flat portion of top/bottom equivalent to flat portion of vertical left/right? Are the edges pronounced with tilt angles
Clasp: if 1976-77 it is almost empty (brevete only). 1977-80 large clasp with Nautilus engraved. 1981-90 thin clasp with Nautilus engraved. If double with pitchfork shape it is replacement.
Calatrava: can you still see it wirth a relief or polished has shaved it?
Original papers: smell them! And check if the 4 letters code is on them proving the date it was made.