Julien Le Roy à Paris No. 4934, made by his son Pierre circa 1777. An extremely rare small size movement, embodying the Sully type escapement as improved by Pierre Le Roy. | L\'ART DE L\'HORLOGERIE EN FRANCE DE XVIe AU XXe SIÈCLE | Geneva, Hotel Des Bergues, 14th November 1993

L\'ART DE L\'HORLOGERIE EN FRANCE DE ...

Geneva, Hotel Des Bergues, Nov 14, 1993

LOT 76

Julien Le Roy à Paris No. 4934, made by his son Pierre circa 1777. An extremely rare small size movement, embodying the Sully type escapement as improved by Pierre Le Roy.

CHF 2,000 - 3,000

Sold: CHF 5,750

D. Lacking. M. Gilt brass full plate with cylindrical pillars, fusee with chain, frictional rest escapement of Sully type as improved by Pierre Le Roy with the typical "spider" escape wheel, for pocket watches à l'usage des astronomes et des marins. Plain steel three-arm-balance, flat balance spring, gilt brass continental cock pierced and engraved with the initials "J.L.R.", polished steel end-piece and regulator with sliding index. In good condition. Diam. 35 num.

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Notes

About the Sully type frictional rest escapement employed in this movement, see notes to the two previous lots. This movement is described and illustrated by G. Brusa and Ch. Allix: Antiquarian Horology, March 1971, an off-print copy cornes with the watch.