Great thread and it makes you ponder the distincion between marketing and design. Heuer 60/85 seems to straddle both worlds, flitting in and out where it suited them. It seems that the company was proactive where marketing--and especially racing--was concerned and that most of the watches were created to mimic the attributes of a race (Carrera, Silversone), a place (Montreal, Cortina) or a tool (Calculator, Solunar, Autavia) With real design, a product is created around a core of ideas--Charles and Ray Eames and Edith Heath come to mind, along with many of the classic cars being evaluated. With Heuer, my sense is that the appeal of the watches happened mostly by accident. What is especially interesting is how the individual models wax and wane in appeal--Montreals and Calculators seem resurgent in keeping with the trends. Monacos have a life of there own and are clearly a brand within a brand. As consumers of any product know, it is not just the intrinsic qualities that create demand, but the signals that product conveys to the everyone you care about.