Vintage Piaget 9357 Solid 18K Yellow Gold 23MM Ladies Manual Winding Tank Watch. 

This watch is in very good condition for its age and the mechanical winding movement is in good working order; it has been re-tested as of the start of this auction and keeps good time, only running one minute behind digital time after 24 hours. It shows some light signs of cosmetic wear throughout, most notably on the leather strap and sides of the case; a complete letter of authenticity and evaluation of the condition by Piaget has been included. Cost of shipping includes full insurance.

Case: 18K Yellow Gold
Case width: 23 mm (without crown)
Case length: 30 mm (with lugs)
Case thickness: 4 mm

Total weight of watch: 26.9 grams (includes straps)
Fits wrist up to: 7''