Cartier Must De 21 Watch Two-Tone Stainless Steel Quartz Watch. Signed. Serial #901070092. Case measures 27mm. Interior width 2-1/4", band width 1/2". Condition: Pre-owned good condition, scuffs, wear on hardware. The gallery does not warranty the running condition of watches. Estimate: $450.00 - $550.00 Domestic Shipping: $30.00