Harley Quartz Movement 9K Yellow Gold Watch Movement / Component
Watch (Quartz Movement component) · Yellow Gold (gilded/gold-plated brass or solid components featuring a warm classic hue)
Purity: 9K (375 fineness, approximately 37.5% pure gold content)
Type
Watch (Quartz Movement component)
Purity
9K (375 fineness, approximately 37.5% pure gold content)
Gold Type
Yellow Gold (gilded/gold-plated brass or solid components featuring a warm classic hue)
Weight
Estimated total watch movement weight of approximately 3 to 8 grams depending on casing; visible gold components are fractional
Description
An intriguing macro view of a Swiss-made Harley quartz watch movement displaying its internal electronic and mechanical components. The bridge is clearly stamped with the Harley signature, six jewels, unadjusted status, Swiss origin, and the 375 hallmark indicating 9K gold content. The prominent copper wire coil, electronic circuit board traces, and silver oxide watch battery showcase the reliable quartz engineering typical of late 20th-century Swiss watchmaking.
Key Features
Clearly legible Swiss hallmarks (375 for 9K), Harley signature branding, six ruby bearing jewels, and exposed copper electromagnetic coil for quartz stepping motor
Color & Finish
Polished and brushed metallic golden tones with exposed red copper coil wire and ruby bearing jewels
Hallmarks & Stamps
Stamps visible include 'SIX 6 JEWELS', 'UNADJ.', 'SWISS', the numerical purity marking '375', and the cursive 'Harley' maker signature
Dimensions Estimate
Standard small wristwatch movement size, approximately 15mm to 25mm in diameter
Gemstones & Inlays
Six synthetic ruby bearing jewels visible on the movement bridges to reduce friction
Clasp & Closure
Not applicable to internal movement components (press-fit or screw-secured watch case back)
Chain & Links
Not applicable; internal electronic and mechanical watch gear train assembly
Craftsmanship Details
Precision micro-machinery featuring stamped brass bridges, gold plating, ruby bearing jewels, integrated circuit board pathways, and fine copper wire winding
Authentication Indicators
Authentic Swiss typography, standard Ronda/Harley layout, clear '375' purity stamp, and genuine ruby jewel settings
Origin & Maker
Switzerland, manufactured by Harley (Ronda / Harley Ronda movement division)
Era & Period
Late 20th Century / Quartz Crisis Era (circa 1970s-1990s)
Age Estimate
Circa 1980s-1990s based on electronic quartz movement architecture and typography
Cultural Significance
Represents the historical pivot in horology when traditional Swiss craftsmanship adapted to quartz technology to survive the dramatic market shifts of the late 20th century
Condition Notes
Good vintage condition with normal microscopic tool marks and dust commensurate with age; functionality untested from visual inspection alone
Value Estimate
Nominal collector or component value ranging from $20 to $100 depending on working condition and demand for vintage Swiss watch parts, with minimal precious metal melt value due to the small fractional gold content
Care & Maintenance
Keep away from moisture, extreme magnetic fields, and corrosive battery leaks; service by a professional watchmaker using appropriate anti-static tools
Similar Items
ETA quartz movements, Ronda standard quartz calibers, and various vintage Swiss analog-quartz watch modules
Interesting Facts
Harley was a prominent Swiss movement manufacturer associated with Ronda, producing reliable electronic and quartz movements that kept the Swiss watch industry competitive during the digital quartz revolution