1970s Vintage Heath Ceramics Prototype Steamer Bowl. Description: (1) Ceramic prototype steamer bowl, features a steamer chimney (or shaft) at center, dark brown outer/opaque inner finish, die stamped “HEATH” on the bottom. Dimensions: Steamer measures 8 3/8 inch diameter x 3 3/8 inch height. Initials/signature of former owner. Biography: The defining influence of Edith Heath on 20th century American design, by creating distinctive ceramic dinnerware and architectural times that were commercially unavailable at the time, captured the attention of Frank Lloyd Wright, who specified Heath dinnerware for some of his projects Edith Heath — renowned ceramicist, Marsha Ginsburg, SF Chronicle, Jan. Condition: Fine; no chips or cracks. Characteristic of prototypes, there are some areas that may have an uneven or less finished appearance e. See image # 1, steamer chimney exterior bears a globular appearance and observe the inconsistent interior glaze color, most pronounced in the chimney surround area.