This is an antique, early 20th century, Arts & Crafts style, coffee percolator on and alcohol based heating stand that is made from copper, glass and ebonized wood by the American copper appliance firm of Sternau & Co. There is a patented date of 1901 for some of the proprietary elements in this piece. Though this was more likely made slightly after 1901. S. Sternau was established in Brooklyn, NY in 1893 and they made chafing dishes, percolators and small appliances. They produced canned heat and what is now known as Sterno brand cans. The estimate is based on actual recent past recorded auction sales of comparables. Retail 'asking prices' can be higher and vary.