Entrepreneur Gianni Agnelli spotted wearing a Omega

The photograph is deceptively casual: a Sunday snap of Gianni Agnelli, the industrialist who ran Fiat and effectively shaped postwar Italian identity. The detail that stops every watch collector is the massive stainless-steel case of an Omega Seamaster Ploprof ref. 166.077 sitting squarely over a crisp shirt cuff — not under it. That single styling choice transformed a professional diving instrument into one of the most desirable vintage references in the market.

Omega introduced the Seamaster Ploprof — short for Plongeur Professionnel — in 1970 in direct collaboration with COMEX, the French deep-sea diving company. The ref. 166.077 houses the calibre 1002, a robust 26-jewel automatic movement with a 44-hour power reserve, protected inside a tonneau-shaped case measuring 54 mm in length. The crown is locked beneath a hinged orange safety guard, and a second pusher activates the unidirectional elapsed-time bezel. Water resistance was rated to 600 metres — extraordinary for a production watch of that era. The asymmetric case, broad lugs, and sheer architectural bulk made it unlike anything else on the market in 1971.

Collectors have long recognised the Ploprof 166.077 as one of Omega's most singular designs of the 1970s: technically serious, visually extreme, and produced in relatively limited numbers compared to the Seamaster 300 or Constellation lines. Original examples with intact bezels, undamaged orange crown guards, and unmolished cases command serious premiums. The watch occupies a firm place in the pantheon alongside the Rolex Sea-Dweller and Blancpain Fifty Fathoms as a true professional dive tool of the period.

Agnelli acquired his Ploprof in 1971, reportedly wearing it almost immediately in public. His endorsement was worth more than any advertising campaign. Known as "l'Avvocato," Agnelli possessed an instinctive understanding of luxury that cut across categories — a man who mixed bespoke Caraceni suits with ski boots and wore his Heuer over a sweater on race days. The Ploprof over the cuff was entirely consistent with that philosophy: disregarding convention while projecting absolute confidence.

On the current grey market, well-preserved examples of the Omega Seamaster Ploprof ref. 166.077 regularly trade between $8,000 and $15,000 depending on condition and originality of the dial and bezel insert. The Agnelli connection sustains persistent collector demand for the reference well beyond what its production numbers alone would justify.