The urn-capped and husk-festooned oval frame accompanied by laurels tied by a flowered boss relates to a pattern published in Thomas Johnson's Set of Engravings, 1775, pl. 5. A pattern for an oval mirror surmounted by a dolphin-supported urn featured in Twelve New Designs of Frames (pl. 5) issued under the initials 'S.H.' in 1779 (illustrated in E. White, Pictorial Dictionary of British 18th Century Furniture Design, Woodbridge, 1990, pp. 346 and 350).