This clavichord was restored in 1969. The original straight bass end had been changed and was replaced by a new curved end at the restoration. String thicknesses and string materials used for the calculation of the string tensions are those chosen at the restoration.

If tangents are adjusted for a tuning in quarter-comma meantone they are close to vertical. This makes it probable that this was the tuning intended by the maker.

For a discussion of this choice see Clavichord International Vol.10 No.1 May 2006, pp. 17-20: HansErik Svensson, Comments on the tuning of some fretted clavichords in the Stockholm Music Museum.