DUBEY & SCHALDENBRAN. A MENS STAINLESS STEEL AUTOMATIC CALENDAR CHRONOGRAPH WRISTWATCH No 637 Model: Aerochrono Reference number: N636 Date: Circa 2007 Movement: Signed, 33-Jewels, Cal.2094 Dial: Signed, black grid, white painted Arabic numerals, white outer minute division, silvered hands, subsidiary dials at the 3, 6 and 9 o'clock position for seconds and for chronograph, date aperture between the 4 and 5 o'clock positions Case: Signed, polished rectangular stainless steel, exhibition back secured by 7 screws, numbered 637 Size: 32mm by 43mm Accompaniments: Signed wooden box, instructions and guaranty from 2007