Hamilton Certified Pre-Owned watches have been expertly restored by our factory trained watchmakers. Our Pre-Owned watches are accompanied by a two year warranty. Patek Philippe Complications. Featuring_ 18k rose gold 38mm case. Brown alligator strap. Mechanical self winding Caliber 324 S QA LU. Annual calendar, moon phase. Diamond bezel 1.28 carats total. Silver sunburst dial.