Vintage Gold-Tone Service Award Ring with Turquoise Inlay

This is a vintage men's signet-style ring, appearing to be crafted from a gold-toned base metal or gold-plated sterling silver, despite the provided context of sterling silver. The ring features a round central face set with a vibrant blue turquoise inlay. Superimposed on the turquoise is a gold-tone geometric logo consisting of two interlocking hexagonal or stylized 'C' shapes, suggesting it is a corporate service award or fraternal organization piece. The shoulders of the ring are intricately cast with a pattern resembling a watch band or brick-link motif, adding a masculine, industrial aesthetic. Inside the band, visible hallmarks include '10' (likely a size) and 'GB' or 'CGF', which could indicate a manufacturer mark or a specific gold-fill quality. The construction shows signs of age-related wear, with visible thinning of the gold plating on the raised edges and a distinct patina in the recessed areas of the band's texture. The turquoise inlay appears stable with a matte finish. Overall, the piece displays characteristic mid-to-late 20th-century craftsmanship typical of professional commemorative jewelry.