Ipswich was produced 1931-1946 and again in 1951-1953 in crystal. The main colors are crystal, moongleam, sahara and flamingo. The design is based on the Sandwich glass pattern Comet. Most items are marked.
Imperial reissued two sizes of candy jars and a footed bowl in their own colors. They also made an Ipswich pecan bowl which wasn't made by Heisey. All of these may be found with the Heisey mark.
