Manufacturer:

• Girard-Perregaux

Description:

• Self-winding movement, bi-directional winding (with two roller freewheels)
• Incabloc shock absorber
• Number of parts ?

Functions:

• Central seconds / small seconds
• Date

Data:

• 11½ lignes
• D 25.6 mm, H 5.64 mm
• 19 - 39 jewels
• 18,000 A/h
• Power reserve 40h

Production period:

• 1956-1957