Pencil on vellum; 5 ½ by 4 ½ ins; 14 x 11.5 cm; framed as an oval; bears artist's stamp 'JR', inscribed by Richardson 'Mrs Cath Knapp' and dated 4th December 1731; held in a late 18th century gilt wood frame

Provenance: Jonathan Richardson and then to his son, until sold February 1772; more recently William Drummond art dealer, London c.1990