Arnold & Son Perpetual Moon mechanical watch with a 42 mm stainless steel case, a vivid blue guilloche dial on a hand-stitched black crocodile leather strap. The dial boasts stunning layered lacquer with silvered moon and stars in an oversized phases-of-the-moon complication. Functions include hours, minutes, precision moon phase indicator, second moon phase indicator case back. 90-hour power reserve. Features are a rhodium-plated Haute Horlogerie finishing: hand chamfered bridges with polished edges, circular graining and sunray Côtes de Genève, blued screws with polished and chamfered edges.