This is a great Hopalong Cassidy collectible milk glass cereal bowl with matching plate and cup manufactured by the Hazel-Atlas Glass Company during the 1940s-'50s. Hazel-Atlas called their milk glass "platonite."
The bowl measures 5" in diameter and 2-1/4" deep with black graphics. The plate is 6-7/8" in diameter with Hopalong and his horse, Topper, in the center and the 8 oz. cup measures 3-7/8" tall. All pieces are embossed with the Hazel-Atlas logo on the underside.
The bowl, plate and cup still have their glossy finish and don't appear to have any scratches in the paint. Excellent condition. No chips or cracks. There are swirls in the glass from manufacture.