Vintage 10K Yellow Gold Split-Prong Stud Fastener
Jewelry Component / Fastener (Butterfly Back or Stud Pin) · Yellow Gold (Copper and Silver alloy). Displays a pale, brassy yellow tone characteristic of 10K alloys.
Purity: 10K (41.7% pure gold). The duller luster and brassy hue suggest a lower karat alloy typically used for structural jewelry findings for increased durability.
Type
Jewelry Component / Fastener (Butterfly Back or Stud Pin)
Purity
10K (41.7% pure gold). The duller luster and brassy hue suggest a lower karat alloy typically used for structural jewelry findings for increased durability.
Gold Type
Yellow Gold (Copper and Silver alloy). Displays a pale, brassy yellow tone characteristic of 10K alloys.
Weight
0.4 to 0.6 grams. Extremely lightweight, small jewelry findings typically range between 0.2g and 1.0g depending on thickness.
Description
A utilitarian jewelry component, specifically a split-prong fastener typically used for lapel pins or service medals. The item features a circular domed head attached to a tapered, split shank designed for semi-permanent attachment. The metal exhibits a characteristic 10K yellow gold hue with significant superficial scratching on the top surface.
Key Features
Single-piece construction with a split-pin shank. The durability of the 10K gold allows the prongs to be bent multiple times without immediate snapping, unlike higher karat gold.
Color & Finish
Pale Yellow Gold with a tumbled or work-worn satin finish. The top shows significant surface abrasions and a slight dulling/patina from age and repeated use.
Hallmarks & Stamps
No visible stamps in the image. Such small fasteners are often marked '10K' or '417' on the flat back of the head or along the prong, though many vintage findings were unmarked or stamped on the missing mate.
Dimensions Estimate
Head diameter: 4-5mm; Shank length: 8-10mm; Standard petite finding size.
Gemstones & Inlays
None. This is a functional solid metal finding.
Clasp & Closure
Split-prong / Cotter-pin style closure. Designed to be inserted through a fabric hole or jewelry setting and then bent outward to secure the piece in place.
Chain & Links
N/A. This is a single-piece cast/stamped finding with a split shank.
Craftsmanship Details
Simple stamped and machined production. The soldering point between the head and the shank appears clean, characteristic of industrial jewelry manufacturing.
Authentication Indicators
The color consistency throughout the scratches suggests solid gold rather than gold-fill. The lack of oxidation/rust points toward a gold alloy, though 10K can sometimes show slight copper-red toning over decades.
Origin & Maker
Unknown Commercial Manufacturer. Likely mass-produced in the United States or Italy for the jewelry trade supply market.
Era & Period
Mid-20th Century (1940s-1970s). The utilitarian design and split-prong mechanism were common in mid-century lapel pins and military insignia.
Age Estimate
Circa 1950-1980 based on the wear pattern and the specific mechanical style of the split fastener.
Cultural Significance
Representative of functional jewelry design where utility and material value overlap. Used extensively in fraternal, military, and corporate service awards.
Condition Notes
Good-Fair. The head shows heavy surface wear and micro-scratches. The prongs appear slightly distorted, suggesting previous use. No signs of plating loss (brassing), which supports the likelihood of solid gold construction.
Value Estimate
$20 - $35 USD. Value is almost entirely based on the melt value of the gold (intrinsic metal content) plus a small premium for functional use as a replacement part.
Care & Maintenance
Avoid over-bending the prongs as metal fatigue will eventually cause them to snap. Clean with a soft jewelry cloth and warm soapy water to remove accumulated skin oils.
Similar Items
Gold-plated brass lapel backs (look for 'base metal' stamps), 14K screw-back earring posts, and modern 'butterfly' tension clutches.
Interesting Facts
Before the invention of the modern squeeze-trigger clutch, split prongs were the standard for securing pins to thick wool garments and military uniforms to ensure they could not fall off easily.