Lorsa HS 237BC Watch Spare Parts: Essential Guide for Collectors and Watchmakers
The Lorsa HS 237BC is a vintage Swiss manual wind movement, notable for its 10½ ligne (23.3 mm diameter) size and the inclusion of a pointer date complication. It features 15 jewels and operates at 18,000 vibrations per hour (vph), with a power reserve of approximately 35 hours. This movement is part of the broader Lorsa 237 family, which includes variations with sub-second and sweep-second functions, as well as date complications.
Key Technical Specifications
Movement Type: Manual wind with date
Size: 10½ lignes (23.3 mm diameter)
Height: About 4.0 mm
Jewels: 15
Vibrations: 18,000 vph
Power Reserve: 35 hours
Functions: Hours, minutes, small seconds, date pointer
Escapement: Swiss pallet lever
Balance: Monometallic screw balance (non-shock protected)
Winding System: Yoke winding with broken setting lever spring in some specimens
Common Spare Parts
Balance staff and complete balance assembly for precise time regulation
Mainspring and barrel for consistent power delivery
Stem and crown for winding and setting
Date wheel, jumper, and driving gears for calendar function
Gear train components including wheels and pinions
Jewels and bearings to reduce friction and wear
Original or period-correct hands for vintage authenticity
Sourcing and Maintenance Tips
Confirm HS 237BC markings for proper part compatibility
Prioritize NOS or certified Swiss parts from reputable suppliers
Engage experienced watchmakers familiar with vintage manual movements for servicing and repairs
Why Use Genuine Spare Parts?
Ensures accurate timekeeping and reliable calendar function
Preserves the movement’s vintage value and authenticity
Supports long-lasting, professional restoration
Properly maintained with genuine parts, the Lorsa HS 237BC remains a cherished collector’s item, exemplifying Swiss craftsmanship of its era.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340