This Ezra Brooks ceramic decanter is a desirable treasure for the Haeger collector. This was designed by renowned Haeger designer C. Glenn Richardson, who designed for them for 22 years starting in 1971. He eventually became their chief designer, then went on to work freelance for the Harris Marcus Group for several product lines.
This piece cannot be confirmed that it was produced by Haeger in West Dundee, Illinois. Haeger made several decanters for Ezra Brooks decanters, and a resource says this particular item was not produced by Haeger, only designed by their chief designer. Other decanters are confirmed to be Haeger produced. You may know the definite answer. A set of 5 of these designed decanters were auctioned off at the 2017 auction of the Haeger museum collection.
This has some handling wear, (some hand marks on the tower), and there is a slight chip between the cap and base. The cap comes off and cork is fully intact. 15 inches tall and 4-1/2 inches square at the base.