Rare two-tone white and yellow gold-filled Hamilton Pacer prototype dial, circa 1958, is the most sought-after model of the electric Hamiltons, this one measuring 33mm x 41mm lug to lug, with a period expansion watch bracelet with lizard panels. The rare black dial features crosshairs between 10 and 4 and 2 to 8, back engraving dated 6-10-58 can be removed if desired, signature Hamilton battery-powered electric movement, warrantied by Aaron Faber for 12 months, accompanied by Hamilton box.