Harley Quartz Movement Gold Watch Movement with 6 Jewels and 375 Hallmarks
Watch · Yellow Gold case housing
Purity: 9K/375 (37.5% gold content)
Type
Watch
Purity
9K/375 (37.5% gold content)
Gold Type
Yellow Gold case housing
Weight
Estimated case and movement component weight around 10-25 grams depending on overall watch dimensions
Description
A close-up view of a Swiss-made Harley quartz watch movement housed within a solid 9K yellow gold case. The image highlights the intricate electronic circuit board, integrated circuit labeled MB101 1145Y, golden brass-finished bridges stamped with six jewels, unadjusted rating, Swiss origin, and the 375 purity hallmark indicating 9-karat gold. The inclusion of genuine ruby jewel bearings reflects traditional horological craftsmanship integrated with reliable electronic quartz technology.
Key Features
Swiss quartz movement by Harley, 6 jewel bearings, stamped 375 gold fineness, integrated circuit microchip layout, classic golden-gilt movement bridges
Color & Finish
Classic warm yellow gold tone with high polish exterior and mechanical gilt-finished internal movement plates
Hallmarks & Stamps
Stamps visible on the movement bridge include 'SIX 0 JEWELS', 'UNADJ', 'SWISS', '375', and the maker signature 'Harley'
Dimensions Estimate
Standard vintage dress watch movement size, approximately 15mm to 25mm in diameter
Gemstones & Inlays
Six ruby watch jewels visible on the movement bridges for reducing friction
Clasp & Closure
Snap-on or screw-down watch case back closure
Chain & Links
Not applicable - watch movement and case interior component
Craftsmanship Details
Precision Swiss micro-engineering combining electronic circuit boards with gilt-finished brass movement plates, ruby jewel friction bearings, and fine screw fasteners
Authentication Indicators
Clear Swiss manufacture stamps, precise 375 gold purity mark, authentic Harley branding, standard quartz crystal cylinder and trimmer capacitor visible
Origin & Maker
Switzerland, powered by a Harley Swiss quartz movement
Era & Period
Late 20th Century / Modern Quartz Era (circa 1970s-1990s)
Age Estimate
Circa 1980s to 1990s production
Cultural Significance
Represents the historical intersection of traditional precious metal watchmaking (9K gold) and the disruptive quartz technology of the late 20th century.
Condition Notes
Very Good vintage condition. Movement components appear clean with intact circuit traces, visible jewels, and legible crisp stamps.
Value Estimate
Value is determined by the melt value of the 9K gold case combined with the collectible or salvage value of the Swiss watch movement components.
Care & Maintenance
Keep away from moisture and magnetic fields. Ensure battery changes are performed professionally to prevent internal acid leaks or circuit damage.
Similar Items
Other Swiss quartz dress watches featuring Ronda, ETA, or Harley movements housed in 9K or 18K gold cases
Interesting Facts
Harley movements were produced by Ronda SA's Harley division in Switzerland, known for supplying reliable quartz movements to various European watch brands during the quartz revolution.