This is a Fenton Thistle Carnival Glass Bowl, known for its distinctive iridescent finish and thistle pattern. 

• Manufacturer & Pattern: Made by Fenton Art Glass Co., featuring the "Thistle" pattern. 

• Material & Finish: It is carnival glass, characterized by its iridescent sheen, often in colors like amethyst (purple) or green. 

• Age: Many Fenton Thistle bowls date back to the early 1900s, before Fenton began consistently marking their pieces with a logo. 

• Collectibility: These bowls are popular among collectors of antique and vintage glass, sought after for their beauty and historical significance. 

• Variations: The Thistle pattern can be found on various forms, including ruffled bowls and banana boats, and sometimes paired with other patterns like Waterlily and Cattails on the exterior. 

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