Entrepreneur Nerio Alessandri spotted wearing a Rolex

Nerio Alessandri, founder of Technogym, is photographed in this archival image wearing a stainless steel Rolex Cosmograph Daytona Reference 16520, widely known among collectors as the 'Zenith' Daytona. The shot captures him in professional attire beside a Technogym exercise apparatus, documenting an era before the Italian wellness brand achieved global prominence.

The Rolex Cosmograph Daytona 16520 represents a watershed moment in chronograph history. Launched in 1988, it was the first automatic Daytona ever produced by Rolex, replacing the hand-wound calibre 4030 with a substantially modified version of the legendary Zenith El Primero movement—designated calibre 4030 internally, but earning its 'Zenith' nickname from its provenance. The 40 mm case is machined from stainless steel 316L, rated to 100 m water resistance. The black dial features applied baton indices and three gilt subdials: 30-minute counter at 3 o'clock, 12-hour totalizer at 6, and running seconds at 9. The tachymetric bezel is engraved with yellow gold markings. The reference came fitted with the Oyster bracelet, featuring solid end links and hollow centre links for comfort and durability.

The 16520 remains among the most significant production Daytonas. Its 12-year production run (1988–2000) predates the 2000 introduction of the hand-wound 4030 and the eventual shift to the in-house calibre 4130. Early examples, particularly those from 1988–1992, command premiums among collectors who prize the Zenith movement's acknowledged chronometric reputation and the dial's generous gilt finish. Dial variations—including maxi dial and non-maxi versions—further segment the reference into collectible tiers.

Alessandri's choice of the Daytona 16520 reflects the entrepreneurial zeitgeist of late-1980s Italy. The Daytona, born from motorsport culture, resonates with industrialists and engineers. The Zenith Daytona's technical innovation—its first automatic execution—mirrors the iterative engineering discipline central to Technogym's founding ethos.

Retail prices for examples in good condition currently range from $18,000 to $28,000 on the grey market, with rarer dial variants and earlier production batches commanding significantly higher sums. The reference remains highly collectible and sought after, driven by its status as the transitional automatic Daytona and the Zenith El Primero's legendary chronometric lineage.