16 size (ca. 19 1/4”’) | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

• Negative crown winding with lever
• Screw-set jewels (Chatons)
• Swan-neck fine regulator (Illinois Whipspring)
• Crown wheel on the back of the barrel bridge
• Model 4 is also available with a 3-finger wheel train bridge
• Model 5 is the open face (Lépine) version of Model 4 (hunter = Savonnette)
• Models 4 and 5 are also known as the Getty Model

 

• Listing ID: 637
• Manufacturer / Brand: Illinois Watch Co.
• Caliber: Model 4 Grade 173
• Size: 16 size (ca. 19 1/4''')
• Shape: Round
• Winding: Manual (Crown)
• Hand Setting: Crown with lever
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date & Day: None
• Jewels: 15
• Setting Lever Screw/Pin Position: None (Negative Winding)
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Bimetallic screw balance with Breguet hairspring
• Power Reserve: Unknown
• Production Period: 1896 – 1911 (47.319 Stück)
• Identification: Movement marked ILLINOIS WATCH Co. Based on the serial number on this website: https://pocketwatchdatabase.com/search/result/illinois/1586607
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-57#post-7913992
• External Link 2: https://pocketwatchdatabase.com/search/result/illinois/1586607
• Country: U. S. A.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)