The photographs below show some of my Hamilton Electronic examples....note the "Swiss Made" at the base of the dial; a sure sign that the movements are no longer made in Lancaster, PA, USA.

There are additional examples in the "Presentation Watches" link on the left hand side.

Hamilton Electronic; Stainless Steel and Yellow 10K Gold Plate; No back; crystal opening only; No back; Cal. 683 (ESA 9154); 1970	Hamilton Masterpiece Electronic; Yellow 10K Gold Filled; No back; crystal opening only; Cal. 683 (ESA 9154); 1972	Hamilton Masterpiece Electronic dedication; Cal. 683 (ESA 9154).	Hamilton Masterpiece Electronic; Cal. 683 (ESA 9154)	Hamilton Electronic; Stainless Steel Case; Snap On Stainless Steel Back; Cal. 702 (ESA 9158); 1974ish	Hamilton Electronic; Cal. 702 (ESA 9158).
Hamilton Electronic; Stainless Steel Case; Screw Down Back; Cal. 683 (ESA 9154).	Hamilton Electronic; Stainless Steel Case; Screw Down Back; Cal. 683 (ESA 9154).	Hamilton Electronic; Stainless Steel Case; Screw Down Back; Cal. 683 (ESA 9154).	Hamilton Electronic; Stainless Steel Case; Screw Down Back; Cal. 683 (ESA 9154).