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

Remarks:

• In some movement catalogs, the Smiths 400 is also listed as caliber 12.xx (12 = diameter in lines, xx = number of jewels) and the version with center seconds as 27.CS (27 = diameter in mm). Presumably Smiths itself changed the designations over the course of time
• Movement family:
  • Smiths 400 / 12.15: small seconds, 15 jewels, standard version
  • Smiths 400 / 12.16: small seconds, 16 jewels, exclusively for J. W. Benson
  • Smiths 27.CS: sweeping seconds, 17 jewels

• Listing ID: 10354
• Manufacturer / Brand: Smiths
• Caliber: 400 / 12.15
• Size in French Lignes: 12'''
• 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°)
• Shock Protection: KIF Flector
• Beats per hour: 18,000
• Balance Type: Glucydur
• Power Reserve: Approx. 40 hours
• Production Period: 1946+
• Identification: Shown in the book by Barrie Smith: Smiths Watches, Perhead Publication Ltd, 2009 as caliber 400. Listed in the Flume K2 and K3. However, the picture shown there for the Smiths 400 is a Smiths 104, so the picture has been reversed (the 104 then shows the picture of the 400).
• Country: United Kingdom
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)