When it came time to pick the watch he'd wear on-screen when filming Le Mans, Steve McQueen nearly settled on an Omega Speedmaster before the prop manager pointed out the Heuer badge on his uniform. Seeking authenticity at every step — McQueen also did all his driving — he chose a Heuer Monaco instead. This Heuer Monaco. On the last day of filming, he gifted the watch to the chief mechanic, Haig Altounian, for "keeping me alive all these months." Altounian tried to refuse, but McQueen had already had the case back engraved with the message "To Haig Le Mans 1970". Worn very little afterward and stored in a safety deposit box for nearly 50 years, the watch is now coming up for auction as part of Phillips' Racing Pulse auction on Saturday, December 12th, and could well go for a seven-figure sum.