Strategy No. 1 would be to buy by category. You could, for example, zero in on calendar watches, or, barring issues surrounding the aforementioned Nautilus, on 1970s steel sports watches. As simple functionally as it would be, a collection built around a Ref. 5711, a Royal Oak ‘Jumbo’ Extra-Thin, and vintage IWC Ingenieur SL and Vacheron Constantin 222 models would have a completeness to it. You’ll likely bust the budget early doors, but there are SLs to be had for four figures. Although, given the supply issues emanating from Plan-les-Ouates, you’d be more swiftly satisfied by turning to Girard-Perregaux’s sleeper Laureato, and trawling pre-owned sites for a good example Omega Seamaster 200 SHOM, a 1970s piece overdue a rebirth.