A cube teapot sent in by Hayley Mellor of Mellor Metals. 

Hayley researched the teapot and estimates it to be 1920s: "The Cube Teapot was a quest to find the 'Perfect Teapot', one that did not drip tea when poured and was easily stored away when not used without the worry of the spout being chipped. It was very popular in restaurants and was especially used at sea on Ocean Liners for first class passengers." Source: World Collectors Net