This is a vintage cup and saucer set from the "Baltic" series by Adams, a long-established British porcelain manufacturer. Adams is said to be "one of the oldest private porcelain manufacturers in England," and in the 18th century, founder William Adams was a disciple of Josiah Wedgwood. The backstamp in the image was used after Adams was acquired by the Wedgwood Group in 1966. The inscription "Member of the Wedgwood Group" is visible as proof. The brand name was gradually discontinued in the 1990s, so the product is considered a vintage item made between the late 1960s and the 1980s. EST 1657: This refers to the year John Adams, an ancestor of the Adams family, acquired a pottery factory in Burslem, symbolizing the family's long history. REAL ENGLISH IRONSTONE: Indicates that it is made of "ironstone," a very sturdy and chip-resistant material. MICRATEX: A trademark registered in 1961, referring to a special manufacturing method to further enhance strength and chip resistance. It features a design of hand-painted-style blue roses on a white background and a rope-like (mesh pattern) design on the rim. This chain pattern is also known as "Chaine d'Ancre" (anchor chain). The lower part of the cup has vertical lines (ribs). This is a vintage item that is no longer in production (discontinued). Overall, it appears to be free of chips and scratches. There is no box. Approximate sizes are: cup inner diameter 70mm, saucer diameter 125mm. It can be shipped immediately via Rakuraku Mercari, a fully anonymous delivery service. The product will be delivered with professional packing techniques cultivated through many years of experience in the logistics industry.