Two-Tone Enamel Half-Moon Stud Earrings

This item consists of two circular stud earrings, each featuring a two-tone enameled design. Each earring is roughly circular, with one half colored in a vibrant, glossy yellow and the other half in a matte or semi-gloss white or very light gray. The separation between the two colors is a smooth, somewhat curved line, reminiscent of a crescent moon or a stylized yin-yang symbol. The diameter of each earring appears to be approximately 1 to 1.5 inches based on comparison to the towel texture. The material is likely a base metal, possibly brass or alloy, with an enamel coating giving it the distinct colors and smooth finish. The yellow portion exhibits a high gloss, reflecting light, while the white/grey part seems less reflective. On the reverse side of one earring, a standard metal stud post and butterfly back are visible, indicating it is designed for pierced ears. The metal of the post and backing appears to be a silver-tone, possibly stainless steel or a plated alloy, with some minor discoloration or patina visible on the butterfly backing. The overall condition appears good, with no obvious chips or significant scratches in the enamel, though minor surface wear consistent with age and use may be present but is not clearly discernible from the image. The craftsmanship suggests mass production, likely from the mid to late 20th century, possibly 1960s to 1980s, given the bold color blocking and enameled style common in that era. There are no visible maker's marks or signatures.