Breitling Astromat Quantieme perpetual in a 18 kt gold casing the best complications and one of the rarest watches Breitling ever made, only produced in 1992-93 Breitling Astromat QP ref. 18405, a quantieme perpetual, not simply a 1461 This Breitling Astromat QP model K18405 is a very collectible 18 kt gold casing no. 19 (ONLY 100 made). It is a fine and heavy 18 kt gold self-winding waterproof perpetual calendar chronograph wristwatch with moon phases and strap featuring self-winding bejewelled lever movement. This is a very collectible and rare Breathing Astronaut QP model K18405. A fine and heavy 18 kt gold self-winding waterproof perpetual calendar chronograph wristwatch with moon phases and strap featuring self-winding bejewelled lever movement, white dial with applied baton numerals with luminous accents, luminous hands, three subsidiary dials indicating date combined with constant seconds, 30 minutes register combined with month and leap year indicator, 12 hours register combined with day, aperture for phases of the moon combined with lunar calendar, in massive circular water-resistant-type case with revolving bezel calibrated for 360 degrees and points of the compass N, E, S and W, screw back and screw down crown, two round chronograph buttons, 18 kt gold Breitling strap and hidden clasp, case, dial and movement signed. Width: 40 mm / Height: 41 mm / Thickness: 13 mm / Lug Width: 20 mm, strap 200 mm