Jaeger-LeCoultre Caliber 211 – Technical Overview from Document 1084_JLC

The Jaeger-LeCoultre Caliber 211 is a manual-winding mechanical movement recognized for its precise timekeeping and robust construction. Document 1084_JLC presents a detailed examination of this caliber, including its technical specifications, component layout, and maintenance recommendations.

Technical Specifications

• Type: Manual-winding

• Functions: Hours, minutes, small seconds

• Jewels: 17

• Frequency: 18,000 vibrations per hour (2.5 Hz)

• Power Reserve: Approximately 40 hours

• Diameter: Approximately 27.0 mm

• Height: Approximately 3.5 mm

Movement Architecture and Features

• Features a small seconds subdial at 6 o’clock driven by the fourth wheel and pinion

• Employs a two-bridge design for enhanced structural stability and servicing ease

• Contains a reliable gear train and mainspring barrel for consistent power transmission

• Includes a shock protection system on the balance staff to enhance durability

• Manual winding and setting mechanisms designed for smooth operation and longevity

Servicing Notes

• Precise lubrication of escapement pivots, pallet fork jewels, and balance staff jewels is essential

• Light grease is applied to the barrel arbor and winding gears to reduce wear

• Regulation targets amplitude between 250° and 280°, with beat error maintained under 0.7 ms

• The small seconds mechanism must be checked for proper engagement and smooth motion

• Regular inspection of keyless works ensures reliable crown winding and setting functions

Applications

• Caliber 211 was widely used in Jaeger-LeCoultre’s mid-20th-century dress watches

• It is commonly found in models crafted from stainless steel and precious metals, sized approximately 34 to 36 mm

• The caliber is appreciated by collectors for its classic design and mechanical robustness

Conclusion

The Jaeger-LeCoultre Caliber 211, as outlined in document 1084_JLC, exemplifies the brand’s dedication to producing precise, durable, and elegantly designed manual-winding movements. Its combination of reliable performance and ease of maintenance continues to make it a preferred choice for vintage watch enthusiasts and professional watchmakers.