The initials of Mr William E. Boeing of Seattle, Washington, are inscribed on the back of the rare Patek Philippe Reference 130 wristwatch, which sold for $494,000 at Christie's Patek Philippe 175th Anniversary sale on 9 November 2014.

The initials of Mr William E. Boeing of Seattle, Washington, are inscribed on the back of the rare Patek Philippe Reference 130 wristwatch, which sold for $494,000 at Christie's Patek Philippe 175th Anniversary sale on 9 November 2014.