Pilot Ayrton Senna spotted wearing a Tag Heuer

The photograph was taken in Gstaad, the Swiss Alpine resort that in the early 1990s served as an informal paddock annex for Formula 1's inner circle. Ayrton Senna appears alongside Bernie Ecclestone, and on his wrist sits the TAG Heuer Split-Seconds Chronograph reference S25.706C — a piece that tells you everything about Senna's relationship with precision.

The TAG Heuer S25.706C is built around a rattrapante, or split-seconds, chronograph movement — a complication that uses a second, independently stoppable centre seconds hand to record intermediate lap times without interrupting the main elapsed-time count. In a two-register configuration with subsidiary dials for running seconds and elapsed minutes, the case marries polished stainless steel with yellow gold accents, giving it a dressy yet sporting presence that suited Senna's off-circuit style. The reference was produced during TAG Heuer's post-Heuer, pre-LVMH era, when the brand was engineering serious mechanical complications to match its Formula 1 sponsorship narrative with genuine horological substance.

For collectors, the S25.706C occupies an interesting niche: it is complex enough to satisfy movement enthusiasts, period-correct enough to anchor any 1980s–90s TAG Heuer collection, and directly associated with the sport's most celebrated driver. Rattrapante examples from this era are significantly rarer than standard-column-wheel chronographs from the same catalogue, and condition-dependent examples surface infrequently on the secondary market.

The human story around this particular watch is as compelling as its movement. In 1993 — Senna's final season with McLaren, won ultimately by Alain Prost — Senna reportedly promised a McLaren mechanic that if he took the championship, they would swap watches. Senna fell short of the title, but honoured the spirit of the promise anyway, handing over the TAG Heuer S25.706C in exchange for the mechanic's Casio. It is the kind of gesture that defined his reputation beyond the cockpit.

On the grey market, documented Senna-associated TAG Heuer references command substantial premiums over standard examples. A clean S25.706C in steel and gold typically trades in the low-to-mid four-figure range, but provenance of this calibre moves pieces into an entirely different conversation.