An exceptionally rare Philippe Dufour Grande et Petite Sonnerie has been listed for sale via A Collected Man for $7.63 million.

Patek Philippe's new ref. 6301P is a pure-form platinum grande sonnerie watch with a sapphire crystal case for a full view of its movement.

The Grande Sonnerie is Patek's first wristwatch that presents the grande sonnerie complication in its purest form, complemented with a petite sonnerie and a minute repeater. Patek Philippe/JD Meyer ...