Live in Exclusives. A Reference 10, one of fewer than ten examples of the Reference 10 made across all metals. The Reference 10 is the last perpetual calendar conceived within Pratt-Baumberger ownership, the last watch made under Peter Baumberger at Urban Jürgensen before Danish ownership. While an obvious descendant of the Reference 2, the Reference 10 is an evolved platform which features twin barrels, a faster-beating 1160, running seconds coaxial with the date, exhibition snap-caseback, and 40mm case reminiscent of the Big 8 which came later. Low single digits examples of this pink gold exist, one of the rarest references and finale of the Pratt-Baumberger years. hairspring.com/collections/e…