This is a demitasse cup and saucer from the "Medici" series by Wedgwood, a British luxury ceramic brand. The mark on the backstamp is Wedgwood's iconic logo, commonly known as the "Portland Vase." In the late 1780s, founder Josiah Wedgwood was deeply committed to recreating the "Portland Vase" (then known as the Barberini Vase), a masterpiece of ancient Roman cameo glass, in pottery. After four years and thousands of experiments, this replica was completed in 1790 and was considered the pinnacle of technical achievement in ceramics at the time. Josiah himself declared, "My greatest work is the Portland Vase." The backstamp commemorates this achievement, and the design of this vase has been used as Wedgwood's backstamp for many years. This mark is interpreted as depicting the wedding ceremony of Peleus and Thetis from Greek mythology. The mark in the image includes the "®" symbol, indicating it is a registered trademark that began to be used after 1940. This design mark began to be used around 1879. This product is from a series that was manufactured from around 1980 to 1989, and is now an extremely rare, discontinued (vintage) series. The material is high-quality bone china, and the design is derived from the Medici family, who patronized Italian Renaissance art, featuring an elegant neoclassical style. It has a dark blue (cobalt blue) band adorned with golden shell patterns. This is a valuable vintage item and a worthwhile piece for collectors. Overall, there are no chips or scratches. The box is not included. The approximate size is a cup inner diameter of 55mm and a saucer diameter of 120mm. Immediate shipping is available via Rakuraku Mercari Bin, which offers complete anonymous shipping. The product will be delivered with professional packing techniques honed through many years of experience in the logistics industry.