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

Remarks:

• Negative Winding
• There is a similar Buren Model No. 305

• Listing ID: 809
• Manufacturer / Brand: Buren
• Caliber: Model No. 306
• Size in French Lignes: 19'''
• Size range mm largest diameter: > 40 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: Crown
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Jewels: 11
• Setting Lever Screw/Pin Position: None (Negative Winding)
• Balance Position: Left (240 - 360°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Around 1903
• Country: Switzerland
• Identification: Registered by H. Williamson (owner of Buren) in the Swiss Official Gazette of Commerce on 22.09.1903 as model No. 306. Model No. 306 is not an official caliber designation of the manufacturer, but was used to register the design. Movement marked BUREN.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-54#post-7331836