Shadowbox Diorama of an American 3-Masted Sloop Consign Now DeptMaritime ArtsSize11 in. x 21 in. Shadowbox Diorama of an American 3-Masted Sloop, 19th century, with carved hull and sails, painted sky and seas. 11 in. x 21 in. Please note that this auction has ended. Click here for an overview of this auction.