This IWC Pilot's Watch Mark XVIII Edition "HODINKEE", reference IW324801, is one of the most quietly coveted collaborations of its era, a numbered edition of 500 that sold out on release and now reaches the market only rarely. It runs the automatic calibre 35100, a time-only movement with central seconds and no date, its restraint set deliberately against the case that surrounds it. That case is worked entirely in Ceratanium, IWC's proprietary alloy that hardens under heat to a matte black rivalling ceramic while keeping the lightness of titanium, measuring 39mm across and 10.8mm thick for a presence that sits easily on the wrist. The dial is black, its sand-toned numerals lending a vintage warmth. The appeal lies in the pairing: an exotic material of the sort usually reserved for far grander references, set around a plain field-watch calibre and a knowing nod to the lineage of the original Mark 11.