Patek Philippe 3900 Nautilus Diamond 1990s

Classic Nautilus DNA — Refined in a Mid-Size Masterpiece - Patek Philippe 3900

The Patek Philippe Nautilus Ref. 3900 distills everything that makes the Nautilus iconic — Gérald Genta’s signature porthole design, the ribbed dial, and integrated bracelet — into a rare, slimmer 32.5 mm format. Introduced in the early 1980s, this reference is perfect for those who seek the elegance of the Nautilus in a more understated size.

With its rounded octagonal bezel, protruding “ears,” and anthracite blue ribbed dial, the watch exudes quiet confidence. 

This example comes in fantastic condition, retaining all the crisp lines of the original case and bracelet. It got an upgrade to a diamond index dial in the past, since it was born with the regular Nautilus dial.

The Nautilus 3900 is more than a smaller sibling — it’s a rare and refined chapter in the legacy of Patek Philippe’s most iconic design.

- wrist size in our picture is 18cm circumference -

DIAL:

• original ribbed anthracite/blue Nautilus sigma dial with diamond indexes in flawless condition 
• this model was born with the regular Nautilus dial, dial has been exchanged for original one with diamond indexes in the past
• original hands and crown
  

BRACELET & CLASP:

• original Patek Philippe stainless steel bracelet is fitting up to 18 cm wrist size / 3 mm thick (links can be removed)
  
• original Patek Philippe stainless steel buckle

CASE:

• great overall condition, showing traces of used
• monobloc case in stainless steel withe screwed-on bezel
• 32.5 mm (without crown) / 35 mm (lug-to-lug) / 20 mm (between lugs) / 6.5 mm thick
• year: early 1990s
• reference: 3900 / 001
  
• total weight: 72 g

MOVEMENT:

• Patek Philippe Quartz Cal. E23SC 
  
• professionally serviced 01/2026
  

BOX & PAPERS:

• GOLDAMMER certificate of authenticity & service documentation card
• GOLDAMMER Box

GOLDAMMER REFERENCE: #1360