DescriptionHamilton Model 511 "Thin Electric" Wear-Test Prototype, Serial #9 of 11 Total
Case: stainless steel, two body, screw down case back, 35 mm
Dial: white, black Arabic numerals and minute marks, black lance hands, red second hand
Movement: model 511, No. 9 of 11, electric, "thin model"
Band: Hamilton leather strap and steel buckle
Note: In 1965 researchers tried adapting the existing Model 505 technology to make as thin a watch as possible. This "thin electric" was named Model 511. The movement was fitted with platinum contacts rather than the soft gold contacts of the 505. Platinum was used to reduce contact wear. The problem of carbon build up on the platinum contacts was addressed in the Model 511 by reversing the electrical polarity. Jim Reese kept a Model 511 running on his desk for twenty-six years, with the original contacts. The present lot is shown on page 94 of "The Watch of the Future" and it is accompanied by a copy of a letter from René Rondeau to retired Hamilton employee Robert McCollough about the watch, which was acquired from McCollough along with other materials.
Type: Hamilton Model 511 "Thin Electric" Wear-Test Prototype, Serial #9 of 11 Total
Dial: white, black Arabic numerals
Hands; black lance hands
Metal: stainless steel
Case Info: two body, screw down back
Case Width: 35 mm
Watch Movement: model 511, No. 9 of 11, electric, "thin model"
Band: black Hamilton leather strap, steel buckle
Condition: dial and case are good, non running, some scratches on the crystal, wear to the strap
*Heritage Auctions strongly encourages in-person inspection of items by the bidder. Statements by Heritage regarding the condition of objects are for guidance only and should not be relied upon as statements of fact, and do not constitute a representation, warranty, or assumption of liability by Heritage. All lots offered are sold "AS IS".
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