Marvin 520 Watch Spare Parts: Detailed Guide for Collectors and Watchmakers
The Marvin 520 is a Swiss manual wind movement produced from the mid-1940s to the late 1950s, distinguished by its robust construction and elegant design. Measuring 10.5 ligne (about 23.4 mm), the calibre features 15 or 17 jewels, a lever escapement, and delivers a 48-hour power reserve at 18,000 vibrations per hour (vph). It was commonly used in steel wristwatches and elegant Art Deco dress watches. The movement is noted for its compensation balance and subsidiary seconds dial.
Key Technical Specifications
Calibre: Marvin 520
Type: Manual wind, lever escapement
Size: 10.5 ligne (23.4 mm diameter, 3.5 mm height)
Jewels: 15 or 17 (varies by model)
Power Reserve: 48 hours
Frequency: 18,000 vph
Complications: Subsidiary seconds
Era: 1945–1955 Switzerland
Common Spare Parts
Balance Assembly & Staff: Vital for maintaining accurate oscillation; with compensation balance
Mainspring & Barrel: NOS Swiss mainsprings (Generale Ressorts recommended) for optimal power delivery
Stem & Crown: For winding and setting the time
Gear Train Wheels: Center, third, fourth, and escape wheels for precise power transmission
Pallet Fork & Escape Wheel: Central to the lever escapement for accurate timekeeping
Jewels & Bearings: Full jewel set for friction reduction and improved longevity
Hands: Style matched to subsidiary seconds dials, period-appropriate
Case Clamps & Screws: Ensure secure mounting in wristwatch cases
Maintenance and Sourcing Tips
Verify calibre marking 520 before ordering or fitting parts
Seek New Old Stock (NOS) or genuine Swiss Marvin and compatible parts via reputable suppliers
Restoration is best done by watchmakers familiar with Swiss vintage manual movements
Importance of Genuine Spare Parts
Ensures sustained accuracy and performance
Maintains historical authenticity and value
Supports proper restoration and lasting reliability
Collecting original Marvin 520 spare parts is essential for maintaining these classic Swiss timepieces in optimal condition for both display and daily use.
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