Vintage Baume & Mercier 18k Yellow Gold Chronograph. The model number of this Baume & Mercier is 3927. The case is 18k rose gold featuring a smooth 18k rose gold bezel and professionally refinished dial. The case measures 35mm in diameter. This Baume & Mercier is accompanied by a generic strap and buckle. The caseback is stamped "18K 0.750 66XXX 3927". The movement is signed "BAUME & MERCIER SWISS VOS UNADJUSTED 17 SEVENTEEN JEWELS". The case serial is 66XXX. Condition: (Good).