stamped-metal ceiling

pressed-metal ceiling

A sheet-metal ceiling embossed in a decorative pattern; usually coated with a layer of tin and lead or a coat of paint primer as a protection against oxidation; much used on the ceilings of stores after about 1875, especially during the early part of the 20th century.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.