Favre Leuba Caliber 253

Manufacturer	Favre-Leuba
Caliber Number	FL 253
Movement Type	Mechanical, manual-wind
Lignes	11.5”’
Diameter	25.6mm
Height	3mm
Jewel Count	17
Beat Rate	18,000 vph
Lift Angle	Unconfirmed
Power Reserve	48 hours
Barrel Count	2
Anti-Shock Device	Kif (as pictured above) or Incabloc
Hand Count	3
Functions	Central hours; central minutes; central sweeping seconds
Hacking Seconds?	Yes
Country of Manufacture	Switzerland, Swiss made
Known Models	Favre-Leuba Sea King Twinpower, Favre-Leuba Sea Chief (Add your watch to the comments below…)

Favre-Leuba caliber 253 is a vintage handwound no-date watch movement. This caliber has 17 jewels and a frequency of 18,000bph.

The notable feature of the 253 is its double mainspring barrels, which are fully jeweled. This helps with an increased performance thanks to balancing out the reduction in energy though the twin barrels.