Found:


Keyed guitar

Christian Claus (attributed to), Longman and Broderip, c. 1785

Folding harpsichord

Rijk van Arkel, 1768

On display in room 0.8

Pianoforte

Erard Frères, 1808

On display in room 1.12

Square piano

Zumpe & Buntebart, 1773

Square piano

Meincke en Pieter Meijer, c. 1805 - c. 1808

On display in room 0.8

Cabinet piano (Apollo piano)

Meincke en Pieter Meijer, c. 1815 - c. 1820