This vintage 1940s Fire King Custard Glass Mixing Nesting Bowl Set is a five-piece set of round, mid-century modern style bowls with a glossy finish and tulip pattern design. Made in America by Anchor Hocking, these Depression Glass bowls come in sizes ranging from 9 to 6 inches across, with a drip jar included. The set is an original vintage piece, featuring vibrant colors on ivory glass, making it a decorative and functional addition to any collection or kitchen. Ideal for all occasions, this set is a unique and charming representation of mid 20th-century American glassmaking. This set is in excellent condition; however, the largest bowl has three small dots along the edge as shown in the photo.
Not sure if they were an impurity in the glass making process but I point it out so you know.