A pink gold automatic perpetual calendar wristwatch with registers, moon phases and tachometer, Breitling, "Navitimer QP", circa 1993, no. 18 of 25

18k, nickel lever movement, glucydur balance 37 jewels, blue matte dial, applied baton numerals, four silvered matte dials indicating subsidiary seconds combined with seasons and date, register for 12 hours combined with leap year indicator and day of week, outer ring calibrated for tachometer, silvered matte chapter ring calibrated as a slide rule, circular water-resistant-type case, case, dial and movement signed, with 18k Breitling buckle.

Accompanied by instruction booklets for the watch and the use of the slide rule, a wheel-form slide rule, and a numbered certificate.