I bought a bike from a yard sale today for $5. All it says on it is Mercier, made in France. It is a Mixtie frame. Cranks say advprat universal. Simplex front and rear. Normandy hubs front and rear with quick releas front and rear. Shifters are onthe downtube. Decal says Special Luxtub. Has Mafac Racer center pull brakes. Chrome tip front fork and chrome tips in rear. Tires 27 x 1 1/4 and Saminox made in France wheels. Frame is in good shape with just a little surface rust. Handle bars are not drops but straight with turn on ends and rubber grips. 10 speed. What is it? Is it worth anything or fixing up. Any general info would be appreciated since I am new at this. Thanks.