A seven-stringed bass viola da gamba by Dietrich Kessler labelled Dietrich M. Kessler/of Zurich/London No 48 1963 and branded three times on the inside back; the two-piece flat back of small curl with double purfling, the ribs similar, the pegbox of plain wood with an open scroll, the table of open grain with double purfling, the varnish of a golden orange colour, the string length 27in. (68.5cm), in case