Vintage Triangular Lapel Pin or Tie Tack

This item is a small, vintage ornamental accessory, likely a lapel pin or a tie tack, currently presented on a square white paper or cardstock backing. The pin features a distinctive isosceles triangular shape with slightly rounded corners. Its color is a deep forest green, which appears to be achieved through an enamel coating or a polished stone inlay such as jade or aventurine over a metal base. Centrally positioned on the face of the triangle is a small circular element, possibly a metal setting or a tiny inset stone, which serves as a focal point. Based on the style and construction, the item likely dates from the mid-20th century, approximately the 1950s to 1970s. The size is estimated to be approximately 1/2 to 5/8 of an inch in height. The craftsmanship suggests a mass-produced but quality-controlled accessory intended for business or formal wear. Regarding condition, while the image is slightly out of focus, the enamel or stone surface appears generally intact without large visible chips, though there is a soft patina suggest of age. No specific maker's marks are visible on the front; such hallmarks would typically be located on the reverse metal clutch or the pin stem itself. The simple geometric aesthetic is characteristic of Mid-Century Modern design.

I have conducted a visual analysis of this vintage triangular lapel pin. The piece showcases a geometric minimalism consistent with Mid-Century Modern men’s accessories from the 1950s through the late 1960s. The forest green body appears to be a cold-painted enamel or a polished resin inlay on a non-precious base metal. Based on the uniform texture, it is likely a mass-produced item rather than a custom artisan piece or genuine hardstone like jade. The condition appears fair to good; while the surface maintains a decent luster, there is evidence of minor edge wear and a slight patina on the central metal rivet consistent with age. In the current secondary market, specifically platforms like Etsy or eBay, demand for anonymous mid-century men’s haberdashery is steady but high-volume, resulting in low scarcity. Comparables for unsigned geometric pins of this era typically fall within the $15 to $35 range. Value is significantly limited by the lack of a designer hallmark (such as Swank or Hickok) and the use of common materials. Limitations of this appraisal: A definitive determination of the base metal (e.g., brass vs. gold-fill) and the inlay material (stone vs. enamel) cannot be made through imagery alone. To finalize authentication, I would require an in-person physical inspection to perform a metal acid test and a loupe examination of the reverse side for maker's marks, as well as a 'hot needle' or 'scratch' test to differentiate between vintage plastics/resins and natural minerals.