Schwarz Etienne Roma Geometry Cherry (WROGEOMA67SSVEBCLTD)

The Geometry takes the Roma dial apart and puts it back together in four quadrants, each given a different treatment: fluted lines, azuré, clous de Paris and a finely sandblasted minute track, with the small seconds recessed at six. The dial is 18ct gold and the guilloché is worked by hand, so no two quadrants meet without a change of texture. The design is Eric Giroud's.

Here the gold is treated to a cherry red, the boldest dial in the collection and the one that shows the guilloché most plainly. The case is stainless steel, 39mm across and 11mm deep, under domed anti-reflective sapphire and water resistant to fifty metres. Behind it runs the ASE 200.02, an automatic of 198 parts with its micro-rotor set level with the bridges so the finishing stays in view. The power reserve is eighty-six hours. On a black leather strap with a brown lining and a stainless steel folding buckle. Limited to one hundred pieces.