Case: three body, polished and brushed, lapidated lugs, bi-directional bezel, screwed down case back, sapphire crystal.Dial: matte black with louminous Arabic numerals, aperture for the date, subsidiary dial for the seconds, minutes and 12 hours, tachometer scale. Louminous baton hands.Movement: cal.13.Dial, case and movement signed, in good conditionDiam: 41 mm Thickness 11mm.NOTE: The Aviastar is a member of the Navitimer family and the last of a line that began with the 1940s reference 765s and continued with the AVIs of the 1950s and the Co-Pilots of the 60s and 70s. A new AVI was produced in the 1980s which then developed into the Aviastar in the 1990s