Breitling Astromat Quantieme perpetual in a 18 Kt Gold case the best complications and one of the rarest watches what 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 18KT Gold Case no. 19 (ONLY 100 made)is a fine and heavy 18K gold self-winding waterproof perpetual calendar chronograph wristwatch with phases of the moon and bracelet featuring self-winding jeweled lever movement. This is a very collectible and rare Breathing Astronaut QP model K18405 A fine and heavy 18K gold self-winding waterproof perpetual calendar chronograph wristwatch with phases of the moon and bracelet featuring self-winding jeweled 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, 18K gold Breitling bracelet and hidden clasp, case, dial and movement signed. Width: 40 mm / Height: 41 mm / Thickness: 13 mm / Lug Width: 20 mm, bracelet 200 mm