46 strings. Semi-cylindrical sound box. Double-action mechanism with 'fourchettes' (forks), 7 pedals (the pedal for the swell shutters is missing). Sound box with five rectangular sound holes at the back.
Compass : C' to f''''

Inscription on the neck, on the mechanism side: "Sebastian / and Pierre Erard's Patent N°5983 / 18, Great Marlborough Street, LONDON".
On the capital, in parchment rolls : "PIERRE ERARD / Published dec 18 1835".

Decoration : neo-gothic style, feet with winged creatures.

Founded at the end of the 18th century by Sébastien (1752-1831) and Jean-Baptiste (1750-1836) Erard in Paris, the Erard company first produced pianofortes, before adding to their catalogue the new harps designed by Sébastien. He was the inventor of several technological devices for both instruments, like the double-action harp and the double-escapement piano. At his death, his nephew continued to develop the company which became one of the most renowned in the world. It pursued its activities until the 1980’s.