Vintage Chanel Gold-Tone Concentric Door Knocker Pierced Earring

This is a single vintage earring from Chanel, featuring a signature 'door knocker' or drop-hoop style common in the late 1980s to early 1990s. The piece is constructed from gold-plated base metal with a two-tone aesthetic, featuring a bright yellow-gold inner ring and a cooler, possibly silver-toned or white-enamel outer rim. The design consists of a trapezoidal stud post that holds a dangling circular pendant. The pendant showcases intricate openwork with a zigzag or 'wave' motif between two concentric circles. On the reverse side of the top stud, a visible oval authenticity plaque is present, which is characteristic of Chanel costume jewelry produced during the Victoire de Castellane era. This plaque typically includes the Chanel logo, copyright/trademark symbols, and a season code. The condition shows moderate wear and oxidation (patina), particularly visible on the inner surfaces of the gold plating and around the post. The construction is heavy and robust, indicative of high-quality vintage costume jewelry craftsmanship. The earring is currently missing its ear nut/butterfly back. The scale appears to be approximately 1 inch to 1.5 inches in total length.