The Mondani Collection of Rolex Wrist...

Geneva, May 14, 2006

LOT 763

?Self-Winding? August Von Loehr, ?Perpetual Patent?, Swiss made, No. 214. Made circa 1880. Fine and rare, silver, self-winding, square pocket watch with power reserve indication.

CHF 3,000 - 4,000

EUR 1,900 - 2,500 / USD 2,300 - 3,000

Sold: CHF 3,540

C. Four-body, entirely engraved with masks, scrolls and foliage, silver hinged cuvette. D. White enamel, radial Roman numerals, outer minute track and Arabic five minute numerals, subsidiary seconds at 10, power reserve scale at 2. Gold ?Louis XV? hands. M. Square, 38 x 38 mm. (17 x 17???), nickel, 15 jewels, lateral counterpoised lever escapement, cut-bimetallic compensation balance with flat balance spring, jeweled Tshaped oscillating weight with steel banking pins, index regulator. Signed on the dial and case ?Loehr Patent?, on cuvette ?Patent perpetual No. 216?. Dim. 48 x 48 mm. To be sold without reserve


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Grading System
Grade: AA

Very good
Case: 4-7-15

Fair

Oxidized

Slightly rusted
Movement: 4-7**

Fair

Oxidized

Repair required, at buyer's expense
Dial: 3-13-01

Good

Slightly damaged

HANDS Original

Notes

On April 12, 1878 August von Loehr of Vienna filed for a British patent for a selfwinding watch with a special simple overwinding prevention system and a special setting mechanism. On July 13, 1878, he filed for a USA patent, which was granted on January 7, 1879 (No. 211280). Before Loehr?s invention, self-winding watches required an elaborate disengaging system when fully wound. Loehr overcame this problem in a very simple way by employing an elastic ratchet pawl.