Vintage Industrial Brass-Alloy Rectangular Slide Component
Hardware / Industrial Component (Non-Jewelry) · Visual Brass Alloy (Simulation of Gold). The piece displays a greenish-brown oxidation and iridescent tarnish inconsistent with high-karat gold.
Purity: Likely Non-Gold / High-Zinc Brass. No purity markings or karat stamps are visible to indicate gold content.
Type
Hardware / Industrial Component (Non-Jewelry)
Purity
Likely Non-Gold / High-Zinc Brass. No purity markings or karat stamps are visible to indicate gold content.
Gold Type
Visual Brass Alloy (Simulation of Gold). The piece displays a greenish-brown oxidation and iridescent tarnish inconsistent with high-karat gold.
Weight
8 - 15 grams (Estimated based on volume and likely density of copper-base alloy).
Description
This is a rectangular metal slide component, commonly found in mechanical assemblies or as a sleeve for locking mechanisms. While it possesses a yellowish hue, the surface characteristics—specifically the dull luster and characteristic 'rainbow' oxidation—strongly suggest a brass or bronze alloy rather than a precious metal. The design features a central tubular recess and stamped edges meant for fitting into a secondary housing.
Key Features
Industrial stamping, recessed central channel, small circular alignment pin/hole, and distinct chemical oxidation patterns.
Color & Finish
Dull yellow with significant surface oxidation, iridescent purple/blue toning, and a matte industrial finish with machine-striation lines.
Hallmarks & Stamps
No hallmarks or purity stamps identified. There is a small circular indentation or rivet point near the center, typical of mechanical fasteners.
Dimensions Estimate
Approximately 40mm x 10mm x 5mm; rectangular profile with a hollow or recessed channel.
Gemstones & Inlays
None. The item is purely functional/industrial in nature.
Clasp & Closure
Not applicable. The item appears to be a sliding track or a mechanical sleeve used in furniture or cabinetry.
Chain & Links
Not applicable. The item features a grooved, pressed-metal construction with a narrow slit at one end.
Craftsmanship Details
Machine-stamped and pressed metal. Precise but utilitarian, with visible tool marks and standardized industrial tolerances.
Authentication Indicators
Red Flags for Gold: Iridescent surface tarnish (non-gold behavior), lack of karat stamps, greenish oxidation in recessed areas, and machine-stamped industrial form factor.
Origin & Maker
Unknown industrial manufacturer. Mass-produced hardware likely of domestic or East Asian origin.
Era & Period
Modern Utility / Mid-to-Late 20th Century industrial hardware.
Age Estimate
Circa 1970 - 2000. Based on the stamping method and the style of tarnish on the base metal.
Cultural Significance
Low. This item serves a utilitarian purpose in the history of mass-produced hardware and mechanical design.
Condition Notes
Fair. Significant surface tarnish, minor scratches, and signs of atmospheric corrosion (patina). Structural integrity appears sound for a used metal part.
Value Estimate
Negligible/Scrap value. As a base metal object, it holds value primarily as copper/zinc scrap (pennies per ounce). No gold melt value.
Care & Maintenance
Clean with a brass-specific polish if desired. Avoid acidic cleaners which may accelerate the green 'verdigris' oxidation of the copper content.
Similar Items
Often confused with gold-plated decorative trim or small gold bars by laypersons; however, it most closely resembles a drawer slide component or a vintage cigarette lighter sleeve.
Interesting Facts
Brass 'Fool's Gold' alloys were often used in industrial settings to provide a corrosion-resistant and aesthetically pleasing yellow finish without the cost of gold plating.