Corning Vision 1.5 Liter amber double boiler pot and insert with cover. According to the LeClair.Vision website, these were available starting in 1984.
The pot is in very good condition with no chips or cracks and with light wear on the bottom. The insert is in very good condition as well, with no chips or cracks. The cover is in very good condition with a few nicks (see last photo). This is a very handy set and would make a great addition to any cook's kitchen!