Experimental Composite Disc with Brass/Gold-Colored Outer Ring and White Metal Inlay
Industrial Composite Component / Experimental Sample · Yellow-Tone Base Metal (unidentified alloy)
Purity: Suspected Non-Gold (Gold-colored outer ring likely Brass or Low-Karat Gold Plating)
Type
Industrial Composite Component / Experimental Sample
Purity
Suspected Non-Gold (Gold-colored outer ring likely Brass or Low-Karat Gold Plating)
Gold Type
Yellow-Tone Base Metal (unidentified alloy)
Weight
15g - 40g (Based on visible density and diameter; likely contains heavy substrate like lead or steel)
Description
A flat circular disc featuring a dual-layer metallic appearance. The outer circumference exhibits a dark gold or brassy tone with significant oxidation, surrounding a center circle of roughly finished white metal (likely aluminum, steel, or solder) with visible cross-hatched mechanical scratches.
Key Features
Concentric dual-metal design; Rough industrial finish; Absence of any traditional jewelry or bullion markings
Color & Finish
Dull yellow/brown oxidation on outer rim; Scratched, directional brushed finish on white metal interior
Hallmarks & Stamps
None visible; Lack of markings is a significant indicator of non-precious industrial use
Dimensions Estimate
30mm - 40mm Diameter; 3mm - 5mm Thickness
Gemstones & Inlays
Composite construction with a two-part metallic interface; no precious stones present
Clasp & Closure
None (Solid individual object)
Chain & Links
Not Applicable (Solid disc)
Craftsmanship Details
Machine-cut edges; Pressure-fit or soldered inlay center; Basic industrial finishing with no decorative intent
Authentication Indicators
RED FLAG: High level of oxidation on 'gold' surface is inconsistent with high-purity gold; Mechanical tool marks suggest industrial fabrication rather than precious metal refinement
Origin & Maker
Unknown; likely a workshop test piece or specialized industrial component
Era & Period
Modern Industrial (Late 20th Century - Present)
Age Estimate
Recent production; 1990s to present based on mechanical machining marks
Cultural Significance
Represents industrial manufacturing and experimental metallurgy rather than ornamental or monetary culture
Condition Notes
Poor/Fair; Heavy surface scratching on center inlay; uneven oxidation and possible corrosion on the outer yellow rim
Value Estimate
Negligible; Primarily scrap metal value ($0.05 - $0.50) unless precious metals are identified via X-Ray Fluorescence
Care & Maintenance
Keep dry; handle with gloves to prevent further oxidation of base metals; identify via XRF before considering any cleaning
Similar Items
Brass plumbing gaskets, bimetallic coins (e.g., 2 Euro), or lead-filled counterfeit gold coins
Interesting Facts
Gold is often used in industrial bimetallic discs for electrical conductivity, however, real gold would not show the surface pitting and brown oxidation seen here