Patek Philippe Annual Calendar Flyback Chronograph 5905/1A-001 2022 [NOS]Overview The Patek Philippe Annual Calendar Flyback Chronograph was introduced in 2021 and represents a combination of 2 of the most sought after complications the annual calendar and the chronograph. A fascinating fusion of practicality and sophistication, this combination has long been a hallmark of Patek Philippe's mastery. With the introduction of the 5905 1A, Patek Philippe has unveiled a striking new iteration of its flagship Chronograph Annual