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

Remarks:

• Movement family:
  • Unitas 144: small seconds, height 4.45 mm
  • Unitas 145: small seconds, height 4.45 mm, different bridge shape
  • Unitas 146: small seconds, height 4.70 mm, same bridge shape as 144
  • Unitas 147: indirect sweeping seconds, height 5.20 mm
  • Unitas 173: small seconds, height 4.45 mm, different bridge shape
  • Unitas 173-1: indirect sweeping seconds, height 5.20 mm

• Listing ID: 18540
• Manufacturer / Brand: Unitas
• Caliber: 145
• Size in French Lignes: 13'''
• Size range mm largest diameter: 22 - 31 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: Left
• Balance Position: Bottom (120 - 240°)
• Holes in setting lever spring or rocking bar: 2
• Shock Protection: None
• Beats per hour: 18,000
• Balance Type: Monometallic screw balance
• Power Reserve: Unknown
• Production Period: Unknown
• Country: Switzerland
• Identification: Movement marked with ARSA on the center wheel bridge and with 145 under the balance wheel. Listed in the Flume catalog K1 in the part from 1947 as Unitas 145.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)