Today we know the Calibre 18 as the SW300/ Dubois Depraz module combination offered in the Link and of course the Carrera Telemeter. But regular readers will know a small piece of trivia- Calibre 18 was the original name of the Calibre 1887. Here's a photo I took in 2010 at the launch of the 1887, But we've never seen a Calibre 18 version of the Carrera 1887- until now This is an early prototype- note the "Calibre 18" at 6 o'clock. Compare this to the V1 Carrera 1887, also never released I love seeing these prototypes- gives a real understanding of how designs change during development. So there you have it- the OG Carrera Calibre 18.