This manuscript is almost certainly the copy used by Samuel Arnold to produce the first published edition of the work (1788), evidenced especially by the stage directions which are in exactly the same words as used in the printed edition.
Only few fragments of the last two acts of Teseo exist in autograph form, and there is no performing score in Hamburg, where most of the original performing scores now survive. The present volume constitutes therefore the earliest and most important copy of the work. According to Winton Dean it must have been copied by D. Linike at the end of December 1712, before the first performance.
The libretto for Teseo was adapted by Haym from Quinault’s Thésée (set by Lully in 1675).