Patek Philippe Golden Ellipse in 18k White Gold ref 3545 Double Signed Beyer Colour Changed Dial “Lightning Bolt “More than two millennia ago, the Greek mathematician Euclid defined a principle of perfect proportion that would come to be known as the Golden Ratio a balance so naturally pleasing that Renaissance scholar Luca Pacioli later called it De Divina Proportione, the Divine Proportion. Expressed as the ratio 1: 1. 618, it represents the ideal point where symmetry meets beauty. Drawing on this timeless concept, Patek Philippe introduced the Golden Ellipse