Multianalytical approach for the authenticity of an eighteenth-century Pascal Taskin harpsichord

Abstract

This paper surveys a detailed characterization of a prestigious harpsichord brought into fashion in 1782 by Pascal Taskin. The implemented analytical methodology required the use of in situ Energy Dispersive X-Ray Fluorescence (EDXRF) for elemental analysis of the color palette, optical and SEM imaging (SE and BSE modes) for the layered structure identification, Scanning Electron Microscopy coupled with Energy Dispersive Spectroscopy (SEM-EDS) for elemental composition of the inorganic compounds, Fourier Transform Infrared (FTIR) spectroscopy for some binders and THM-GC/MS as well for resinous layers identification. By cross-checking these data with those obtained by digital radiography, it was concluded that a true ravalement of the harpsichord was in fact undertaken and that, among more than five interventions applied to the instrument until the present day, the third one may correspond to the one performed at Pascal Taskin's time.

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