CARTIER/PIAGET 18K YELLOW GOLD WRISTWATCH.Serial # 12406-154601-20053. Bright-polished cushion shape case centers enameled face with black Roman numerals; sapphire cabochon winding stem; Cartier crocodile strap with signed 18K yellow gold hinged, deployable clasp; Piaget automatic movement Estimate $1,500-2,500