Details 327 came from Emanuel de Witte's Interior with a Woman at a Clavichord (c 1665), which might have been designed as a record sleeve for the Goldberg Variations (though almost a century out). It's in the Museum Boymans- van Beuningen, Rotterdam. The first three correct entries drawn were from Nick Green of Effingham, Surrey; Mrs K Smith of Inverness; and Naomi Nile of Bristol.
Each will receive a bottle of champagne, as will this week's winners. Answers on a postcard (to arrive by Wed 2 Apr) to: DETAILS 329, Arts Desk, IoS, 1 Canada Square, London E14 5DL.