Golden Ratio Refined — The Ellipse in Royal Blue

A bold expression of mathematical elegance from Patek Philippe.

Originally launched in 1968, the Golden Ellipse broke convention by rejecting traditional round or square cases — instead embracing proportions derived from the golden ratio. The result? A timeless silhouette beloved by connoisseurs for its harmony, simplicity, and distinction.

This reference 3583 / 1, also known as the Horizontal Ellipse, elevates the design even further. Its deep blue sunburst sigma dial exudes quiet luxury, while the ultra-slim 18k yellow gold case houses the legendary manual Caliber 175 — visible elegance powered by serious mechanical finesse.

The integrated 18k yellow gold bracelet, flawlessly sculpted to match the case’s curve, delivers unparalleled comfort and coherence. A watch that’s equally suited for black-tie dinners and moments of quiet self-expression.

- wrist size in our picture is 18cm circumference -

DIAL:

• original never touched blue sunburst sigma dial in flawless condition 
• original hands and crown
  

BRACELET & CLASP:

• original Patek Philippe 18k integrated yellow gold strap fitting up to 18.5 cm wrist size / 1.5 mm thick
• bracelet is adjustable by around 1 cm at the clasp; for major adjustments a goldsmith is needed
  
• original Patek Philippe 18k yellow gold buckle

CASE:

• excellent overall condition, showing very minor traces of use
• 3- body 18k yellow gold case with snap-on case back
• 34 mm (without crown) / 26.5 mm (lug-to-lug) / 21.5 mm (between lugs) / 4.5 mm thick
• reference: 3583 / 1
• Year: 1970s
• total weight: 91 g

MOVEMENT:

• Patek Philippe Cal. 175 - manual wound
• 18 jewels, 21600 A/h, 43 hours power reserve
• professionally serviced 10/2025
• +6 sec/d / 290°

BOX & PAPERS:

• come with original Patek Philippe box
• GOLDAMMER certificate of authenticity & service documentation card
  

GOLDAMMER REFERENCE: #1251