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Patek Philippe Annual Calendar  Moonphase “Advanced Research” “Discontinued Model”, Salmon Dial, Limited Edition to 300 Pieces – Platinum on Strap

The “Trilogy” is complete. Patek Philippe unveiled the Ref. 5450 Annual Calendar wristwatch featuring the latest development from the Patek Philippe Advanced Research department, the Pulsomax® escapement. I say “Trilogy” since in 2005, Patek Philippe launched the Ref. 5250 Annual Calendar watch featuring their first high tech innovation the Silinvar® escape wheel, and again in 2006, launched the Ref. 5350 Annual Calendar incorporating the Spiromax® hairspring, also a Silinvar® innovation, in conjunction with the Silinvar® escape wheel. exhibition case back inscribed “Patek Philippe Advanced Research” with cyclops magnifier over the silicon escape wheel

Watch features three applied Arabic numerals in 18k white gold, straight Breguet style, at 3, 9, and 12. Eight applied baton-style indices in 18k white gold. Leaf-shaped hour and minute hands in black nickel-plated white gold with luminescent coating Leaf-shaped day, month, and power-reserve hands in black nickel-plated gold. Counterbalanced seconds hand in black nickel-plated gold. Railway track minute scale transfer-printed on dial perimeter Twelve luminous pearl drop hour markers.