ANTOINE MARTIN QUANTIEME PERPETUAL CALENDAR QP01.500.9 LIMITED EDITION 28 PIECES "A MARTIN BRAUN COMPANY" RETAIL $48,900 LNIB 99% Excellent Condition 100% Authentic, comes with Box and Papers, as seen in photos. established by a master-watchmaker, Martin Braun... Swiss made Antoine Martin Quantieme Perpetual Calendar QP01.500.9 Black DLC/ Stainless Steel round shaped case measuring 46mm diameter. Fixed PVD Stainless Steel bezel. Mechanical manual wing movement, power reserve up to ± 144 hours (6 days) after being fully wound.. Displays a Black Antoine Martin stretched lines dial with Arabic Indices numerals, solid Grey hands, minute track at outer rim. . Day, date, month, AM/PM, and leap year indicators. A big date indicator at 6 o’clock, a day/night display at 9 o’clock and a leap year indicator at 12 o’clock. Vertical apertures for the day and month indicators at 10 and 2 o’clock look impressive, further underlining the “imperial” theme. Power reserve indicator-on caseback. Black crown, left side pusher. Scratch resistant antireflective Sapphire crystal, transparent caseback. Antoine Martin rubber strap with a stainless steel black DLC Antoine Martin Deployant buckle.. Water resistant to 30m/99ft. Display signed " Antonie Martin ", Caseback inscribe & numbered, Movement signed & concealed......... Limited edition of 28 watch... Movement.... Mechanical manual winding movement, calibre AM 39.001.02 - 60 jewels, 18,000 vph, 324 parts, twin mainsprings, in-house, Swiss Made Movement decoration: Decorated by hand. “Calibre AM 39.001 hand-wound movement comes equipped with a modified “Swiss lever escapement” design. Called HPE (High-Performance Escapement,) the module includes non-magnetic silicium parts that greatly increase the timekeeper’s accuracy, also features a twin-mainspring design for its winding system. Working together, the pair of barrels stores enough energy to keep the mechanism running for as long as 144 hours (6 days) after being fully wound. The movement also boasts an extra-large balance wheel. Crafted in Grade 5 titanium, both light and rigid, it features an impressive diameter of 17.5 mm!”.