The Hidden Faces: Covered Portraits of the Renaissance exhibition at The Met is the first to examine an intriguing but largely unknown side—in the literal sense—of Renaissance painting: multisided portraits in which the sitter’s likeness was concealed by a hinged or sliding cover, within a box, or by a dual-faced format. This widespread tradition in Italy and Northern Europe during the 15th and 16th centuries will be explored through approximately 60 double-sided and covered portraits from The Met collection and other American and European institutions, including the reunion of several portraits and their covers that had been split and made part of separate collections.