You can train your eye by visiting auction previews or museums with in-depth collections like the Corning Museum of Glass in Corning, New York, the Chrysler Museum of Art in Norfolk, Virginia; the Tacoma Museum of Glass, or the Morse Museum in Winter Park, Florida. Since it was made in larger quantities, today, Depression glass holds a lower resale value than more intricately made glass from the same period, but is a great place to start for first time collectors. As far as 19th- and 20th-century glass goes, “Tiffany is likely the most well-established and well-known name in glassmaking, achieving the highest prices at auction and really the only name that could be considered a ‘blue chip’ commodity,” says Ben Walker, Bonhams global head of modern decorative art and design.