Patek Philippe Golden Ellipse 3648 – Blue Sigma Perfection of the Early 1970s

Introduced in 1968, the Patek Philippe Golden Ellipse redefined classic watch design by balancing roundness and rectangularity according to the timeless golden ratio. The elegant reference 3648, produced in the early 1970s, captures this philosophy in its purest form.

This example stands out with a flawless blue sigma sunburst dial, beautifully contrasted by the warm tones of the 18k yellow gold case. The slim proportions and harmonious layout reflect everything collectors admire about the Ellipse line.

Inside ticks the hand-wound Patek Philippe Cal. 23-300, renowned for its precision and refined finishing — a perfect match for this understated yet iconic dress watch.

- wrist size in our picture is 18 cm circumference -

DIAL:

• original never touched blue sunburst sigma dial in flawless condition 
• original hands and crown
  
• white color on hands has faded

STRAP & BUCKLE:

• original Patek Philippe brown leather strap fitting up to 20 cm wrist size / 2.3 mm thick
• original Patek Philippe 18k yellow gold buckle

CASE:

• great overall condition, showing minor traces of use
• 3- body 18k yellow gold case with snap-on case back
• 27 mm (without crown) / 32 mm (lug-to-lug) / 18 mm (between lugs) / 5.5 mm thick
• year: 1971-1973
• reference: 3648
• total weight: 37 g

MOVEMENT:

• Patek Philippe Cal. 23 - 300 - manual wound
• 18 jewels, 18000 A/h, 46 hours power reserve
  
• professionally serviced 02/2026
• +9 sec/d / 300°

BOX & PAPERS:

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

GOLDAMMER REFERENCE: #1386