Sotheby's to auction Steve McQueen's Le Mans Heuer Monaco, with rare provenance

Inside a lockbox labeled “1970 LE MANS,” Sotheby's has assembled the kind of evidence collectors crave: not just a famous name, but a chain of custody that reads like a small archive. The watch is a Heuer Reference 1133B Monaco, a stainless steel square automatic chronograph with date from around 1969, and Sotheby's has set the estimate at $500,000 to $1 million ahead of its Important Watches sale in New York on June 15, 2026.

The strength of the lot is not the celebrity aura around Steve McQueen. It is the paperwork. Sotheby's says the watch is accompanied by more than 400 documents from the archive of Don Nunley, the film’s property master, along with more than 200 photographic reproductions from the same archive. Also included is a sworn and signed affidavit Nunley dated September 9, 2016, in which he wrote that the present watch was “worn by Steve McQueen most often throughout the film and on set.” A signed letter from Nunley dated May 21, 2009 is in the package as well. Sotheby's says the watch came from Nunley’s collection and was acquired by a private collector on April 24, 2008.

That is the difference between a good story and a collectible with weight. The Monaco was launched in Geneva on March 3, 1969, and TAG Heuer says it was among the first water-resistant square-faced automatic chronographs. During filming in 1970, McQueen chose the square blue-dial Monaco after seeing the Heuer branding on the racing suit inspired by Jo Siffert, the Swiss driver and early Heuer ambassador. McQueen’s insistence on doing his own driving in Le Mans made the watch part of the film’s visual language, not just a prop.

The market has already shown how much that history can matter. A different McQueen Le Mans Monaco sold at Sotheby's in December 2024 for $1.4 million. Phillips sold another in December 2020 for $2,208,000, then a record for a Heuer at auction. Coverage has said seven blue-dial Heuer Monaco chronographs were sent to the production, which is why every surviving example is judged against the others like evidence in a case file.

For vintage-jewelry collectors, the lesson is plain: a famous-owner claim means little without a continuous ownership trail, production records, dated letters, archival photographs and a clear match between object and image. When the backstory can be traced from manufacture to set to collection, the piece stops being lore and becomes documentation.