This mark belongs to a piece of vintage Ridgways ceramic tableware.

• Maker: Ridgways (often referred to as Ridgway or Job Ridgway).

• Location: Made in England.

• Type/Pattern: "Semi China" is a type of earthenware often used for popular transferware patterns like "Blue Willow".

• Era: This style of mark, featuring a diamond and a paintbrush motif, was commonly used in the early to mid-20th century