Extreme Rare Porsche Orfina design chronograph watch, unique Winning Checker Flags logo dial, this possible was produced for a group of F-1 circuit race. Careback show a F-1 formula race car with the #12, possible Atyon Senna famous Marlboro #12 F-1??? *Note* only my speculation. Movement is valjoux 7750 with a recent full overhaul service done. Case measure at 40.70mm/14.40mm without crown, come with New original Porsche design bracelet on a full length. Overall condition is solid for it age, All functions work as it should be. There are many Porsche Design chronograph out there with the same set up and dials, this One Stand Out of Crowd!! A rare collector piece to add on to, if your a diehard Porsche fan.