Patek Philippe’s advertising tag line, that you never really own a Patek Philippe but merely look after it for the next generation, understates the plurality of those generations (with an s) who have inherited, collected and pursued vintage Patek watches across the decades to ever-increasingly astronomical prices. The Patek Philippe 5970 perpetual calendar chronograph, one of Patek’s grand complications, boasts a heritage of envied ancestors and itself stands as the end of a legacy, distinguished by being the last in a series to use a Lemania 2310 bauche before an in-house movement arrived. As generations come and go from here on out, the appreciation for the passing of the Lemania bauche is likely to grow, making the classically styled 5970 the end-of-an-era collectible.