The product is a vintage Green Depression Uranium Glass 1 LB Butter Cover Lid made by Hazel-Atlas in the United States. This rectangular butter dish features a glossy finish and is a licensed reproduction with an impressed backstamp. The production style is Vaseline and the technique is fused glass, giving it a unique and decorative appeal. It emits a soft glow due to its uranium content, adding a touch of intrigue to any kitchen or dining table.