Antique 18k Gold and Platinum Studs or Cufflinks with Engraved Symbols

This pair of vintage jewelry components, likely formal shirt studs or small cufflinks, showcases a mixed-metal construction typical of high-end early 20th-century craftsmanship. Each piece features a domed, circular head finished with a distinctive brushed or frosted texture. One appears to be crafted from yellow gold while the other shows a darker, possibly tarnished silver-tone metal such as platinum or white gold. The yellow gold stud features a prominent engraved square/rhomboid maker's mark or decorative symbol at its center. The darker stud displays a more complex engraving that appears to be a stylized crown or heraldic crest above a chevron-like base. The edges of the darker stud feature a delicate milgrain or coin-edged border, a hallmark of Art Deco or Edwardian period detailing. In terms of condition, the items show significant superficial wear, including fine scratching, surface oxidation, and debris accumulation in the recessed engraving areas. The darker piece displays some loss of original luster or potentially the remnants of a specialty finish. These artifacts appear to be hand-finished, indicating a high level of artisanal quality from the mid-Victorian to early Art Deco period (circa 1890-1930).

Based on my visual examination of these mixed-metal studs, I believe they represent fine examples of Edwardian era craftsmanship, circa 1900-1915. The use of 18k yellow gold paired with platinum or a high-grade white gold alloy was a hallmark of luxury men's accessories during this period. The 'frosted' or brushed finish provides a sophisticated matte backdrop for the intricate heraldic engravings, which suggest a custom commission or a specific European maker's mark. The milgrain edging is crisp, consistent with hand-turned lathe work from a high-end workshop. Despite the surface oxidation and debris, the structural integrity appears sound, though the 'tarnished' appearance of the white metal piece suggests it may have a high silver content or requires professional cleaning to restore the platinum luster. The market for period gentleman's jewelry remains stable, with high demand for pieces featuring identifiable crests or artisanal textures. However, because I am evaluating these from a digital image, I cannot definitively verify the metal purity or distinguish between platinum and 18k white gold. A physical inspection is required to perform an acid or XRF scan for gold fineness and to inspect the shanks for hallmark stamps that may be obscured. Furthermore, a complete set of three or four studs would command a higher premium; as a mismatched pair or incomplete set, the value is slightly tempered. Full authentication would require provenance documentation or a jeweler's loupe inspection to confirm the method of engraving and the presence of any signature marks on the reverse.