OMEGA. A GENTS 18K YELLOW GOLD AUTOMATIC WRISTWATCH. Model: Constellation. Case Serial Number: 1675436. Date: Circa 1970's. Movement: Signed, cal.712. Dial: Signed, champagne, applied black batons, gilt and black sword hands. Case: Signed, 18K yellow gold, screw down back. Strap: Brown leather, gilt buckle. Size: 33mm. Weight: 42g.