The embossed stamping is located in one side of the square glass jar, in the spirit of the classic Atlas Mason jars of the pre-1960s. Authentic Atlas mason jars were made by Hazel-Atlas Glass from 1902 to 1964. The original jars had the word Atlas, rather than Hazel-Atlas, embossed across the front. However, they did have an H with an A underneath, stamped on the bottom of the jar to designate the manufacturer.