5 3/4 x 8 1/2”’ | Hand Wind | Swiss Lever | No Seconds |

Remarks:

• The Laco 503 probably differs from the Laco 502 only in the number of jewels (16 vs. 8)

• Listing ID: 568
• Manufacturer / Brand: Durowe
• Caliber: Laco 503 = Durowe 50
• Size: 5 3/4 x 8 1/2'''
• Shape: Form
• Winding: Manual (Crown)
• Hand Setting: Crown
• Seconds Hand: None
• Escapement: Lever (Swiss, English, Glashütte)
• Date & Day: None
• Jewels: 16
• Setting Lever Screw/Pin Position: Right
• Balance Position: Right (0 - 120°)
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: 36 hours
• Production Period: Unknown
• Identification: Train wheel bridge marked with LACO 503, dial side with Durowe logo
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-58#post-8090800
• Country: Germany
• Contributor ©: Uhrforum.de member buchenhain