2 Answers

A straight-lug link case with the same dimensions as the original Speedmaster CK2915 (1957-1959), broad arrow hands, a bit of link that faux-patina, link and a bracelet that has the looks of the old reference 7077 bracelet.

To put it bluntly this is a downright rare watch. link Christie's says that less than 10 total examples are known to the public. Despite the single-digit total it's clear that Breguet produced its triple calendar moonphase chronograph sporadically across link three decades in the middle of the 20th century the '50s '60s and '70s which likely indicates it was only ever built on the specific request of clients. Christie's has provided an estimate of CHF 100000 to 200000 for lot link 40.