Elestr Lee, a musician, quickly spotted the printed composer’s name at the bottom – Wolfgang Mozart.
She researched the inscription on the front, which was in French and dedicated to Queen Charlotte, wife of King George III who reigned from 1760 to 1820.
It read in French that the booklet contained ‘six sonatas for the harpsichord’.
To her delight Sotheby’s confirmed that the discovery was a first edition piece of music that an eight-year-old Mozart wrote on a visit to London in January 1765.
Story: BBC News | Photo: BBC News