12 size (approx. 17 3/4”’) | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

• Negative winding with rocking bar

• Listing ID: 12359
• Manufacturer / Brand: New York Standard Watch
• Caliber: Model BF Grade 171
• Size in French Lignes: 12 size (approx. 17 3/4''')
• 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: 15
• Setting Lever Screw/Pin Position: None (Negative Winding)
• Balance Position: Left (240 - 360°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Bimetallics screw balance with Breguet hairspring
• Power Reserve: Unknown
• Production Period: Approx. 1909 - 1920 (400.000 pieces)
• Country: U. S. A.
• Identification: Werk mit New York Standard Watch punziert. Anhand der Seriennummer auf dieser Webseite: https://pocketwatchdatabase.com/search/result/new-york-standard-watch-co/BF163659-171
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
• External Link 2: https://pocketwatchdatabase.com/search/result/new-york-standard-watch-co/BF163659-171