Vintage HAMILTON Automatic 689 17J Cal 63, For Parts or Repair, Balance looks Good. This is a 1 piece case. Dial marked ” Hamilton Automatic “. Caseback marked on the outside ” Hamilton Stainless Steel ” and on the inside Hamilton W. Stainless Steel P901838 Star W. C. Co. Movement marked ” Hamilton Watch Co 689 Seventeen 17 Jewels Unadjusted Swiss 63 “.