Approx 3" high x 4.5" long x 3.5” wide Hazel Atlas Glass Company mark (block style capital “A” inside the curved-leg capital “H”) used from the early 1900s to the late 1950s on bottom Features the "Ring of Fire" when held up to a strong, natural light source. 
Older milk glass (prior to 1960) was made with iridized salts and, therefore, pieces thin enough at the edges produce a halo of 
iridescent reds, blues, and greens in the sun. Excellent condition with no chips or cracks