**Patek Philippe Reference 5205** The Reference 5205 represents Patek Philippe's annual calendar offering within the complications category. This 40mm timepiece displays day, date, month, moon phase, and 24-hour indication, positioning it as a multi-function dress watch that requires adjustment only once per year at the end of February. The 40mm case is available in 18k white gold, 18k rose gold, or platinum, featuring a smooth bezel and sapphire crystal with 30-meter water resistance. The automatic Caliber 324 S QA LU 24H provides 45 hours of power reserve. Each example comes fitted with a leather strap and deployant clasp. In production from 2010 to present, the 5205 appeals to collectors seeking Patek Philippe's annual calendar complication in a contemporary case size. The availability across three precious metal options allows for different aesthetic preferences while maintaining the same movement and case proportions throughout the reference's production run.