Vintage Omega Automatic Geneve 20 Micron Gold-Plated Watch
Wristwatch · Yellow Gold plating over a base metal alloy (gold electroplated)
Purity: 20 Micron Gold Plating (approx. 1/40th - 1/50th by weight) over stainless steel or brass
Type
Wristwatch
Purity
20 Micron Gold Plating (approx. 1/40th - 1/50th by weight) over stainless steel or brass
Gold Type
Yellow Gold plating over a base metal alloy (gold electroplated)
Weight
35-45 grams (total watch weight including movement)
Description
A classic vintage Omega Automatic wristwatch featuring a rectangular 'cushion' case and a silvered dial. This piece represents the late-mid-century aesthetic where traditional round watches evolved into bold, geometric shapes.
Key Features
Cushion-shaped case, date window at 3 o'clock, center sweep seconds hand, and Omega caliber automatic movement
Color & Finish
Classic yellow gold tone with a high-polish finish on the bezel and brushed finish on the lug sides; notable patina and oxidized spots on the dial
Hallmarks & Stamps
Usually stamped 'PLAQUE OR G 20 MICRONS' between the lugs; Omega logo on dial; serial and case reference inside caseback
Dimensions Estimate
33mm to 35mm case diameter (excluding crown), standard men's vintage size
Gemstones & Inlays
None; features applied baton hour markers in a matching gold-tone or nickel finish
Clasp & Closure
Missing strap; requires an 18mm or 19mm spring bar closure for a leather band
Chain & Links
N/A - the item is a watch case without a bracelet/strap
Craftsmanship Details
Swiss-made mechanical movement with hand-applied dial markers and a robust gold-plated pressure-fit or screw-back case construction
Authentication Indicators
Alignment of the 'Omega' symbol, font style of 'Automatic', and the characteristic aging pattern of 20-micron plating
Origin & Maker
Switzerland; manufactured by Omega SA
Era & Period
Mid-Century Modern (1960s - early 1970s)
Age Estimate
Circa 1968-1974 based on the cushion case design and 'Automatic' text
Cultural Significance
During the 1960s, an automatic Omega was a prestigious symbol of European professional success and horological precision
Condition Notes
Fair to Good; significant pitting/corrosion on the dial (tropical or moisture damage), visible scratches on the gold plating, missing strap and crown
Value Estimate
USD 250 - 450 (Value is primarily in the movement and brand name; low gold melt value as it is plated)
Care & Maintenance
Avoid all water exposure due to aged gaskets; use a microfiber cloth for the exterior; requires movement servicing by a watchmaker every 5 years
Similar Items
Vintage Longines flagship gold-plated watches, Tissot Visodate, or Universal Geneve Polerouter
Interesting Facts
The '20 Microns' stamp refers to the thickness of the gold layer; current luxury plating is often only 3-5 microns, making 20 microns quite durable for its era