Longines 18.79 négative

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17”’ | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

  • Negative winding for American watch cases
  • The movement is also available with a wheel train bridge instead of individual cocks
  • Swiss patent number 16831 from 1898 stamped on the balance cock for Charles Brisebard for “Raquette Brisebard”
  • As 18.79 ABC also with a height of 4.50 mm (built from 1905)
  • Dial with 3 feet

 

  • Listing ID: 851
  • Manufacturer / Brand: Longines
  • Caliber: 18.79 négative
  • Size in French Lignes: 17''', according to the manufacturer 17 3/4''', but this can only be achieved together with the retaining ring
  • Size range mm largest diameter: 31 - 40 mm
  • Shape: Round
  • Winding: Manual (Crown)
  • Hands Setting: Crown
  • Seconds Hand: Small seconds
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date, Day, Month...: None
  • Jewels: 15
  • Setting Lever Screw/Pin Position: None (Negative Winding)
  • Balance Position: Right (0 - 120°)
  • Shock Protection: None
  • Beats per hour: 18,000
  • Balance Type: Bimetallic screw balance with flat hairspring
  • Power Reserve: Unknown
  • Production Period: Built from 1897, this movement ca. 1901
  • Identification: In the book by Patrick Linder: At the Heart of an Industrial Vocation, Longines watch movements (1832 - 2007) listed as caliber 18.79 with normal winding, in the Classification Horlogère 1939 with negative winding.
  • External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-52#post-7139035
  • Country: Switzerland
  • Contributor ©: Uhrforum.de member Badener (Andreas Kelz)

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