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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