Tudor. Chronographe bracelet en acier avec date mouvement mécanique Tudor. A stainless steel manual wind calendar chronograph wristwatch Oysterdate Monte Carlo Homeplate, Ref 7031/0, Circa 1971Tudor. Chronographe bracelet en acier avec date mouvement mécaniqueTudor. A stainless steel manual wind calendar chronograph wristwatch Model: Oysterdate Monte Carlo HomeplateReference: 7031/0Date: Circa 1971Movement: 17-jewel Valjoux Cal.7734 manual wind, unadjustedDial: Black, luminous block hour markers, black outer 1/5th second divisions on white surround with outer orange Arabic five minute markers, subsidiary dials at 3 and 9 for seconds and 45 minute recording, magnified date aperture at 6, polished baton hands with luminous inserts, orange centre chronograph handCase: Brushed and polished tonneau form, screw down back and shouldered crown, twin screw down pushers, fixed bezel with black insert, No.759246Strap/Bracelet: Black NATO strapBuckle/Clasp: Steel buckleSigned: Case, dial & movementSize: 40mmIn 1970 Tudor launched their first chronographs in two references, the 7031 and 7032. The two references were essentially identical apart from the 7031 had a black acrylic bezel, as shown with the current example, and the 7032 had a stainless-steel bezel.These were the first chronographs produced by Tudor and are instantly recognisable by the distinctive dial with angled subsidiary dials instead of the more normal circular subsidiaries used by the other chronographs of its time. The combination of the vibrant orange chronograph seconds hand and 5 minute markers against the black dial is a great example of 70's design and a look that remains distinctive working equally well today as it did when it was produced.