The original clavichord was attributed for years, together with the other four identical clavichords in museums in Berlin,Vienna and Paris, to Johann Heinrich Silbermann. This attribution, based just on the design of the rose (which corresponds to the rose of a signed spinet by Johann Heinrich Silbermann) has been questioned. A detailed investigation and comparison of the five clavichords and the only surviving spinet by J. H. Silbermann is a project which still needs to be carried out.
The instrument has a deep walnut case, a range of five octaves and is unfretted.