Catalogued in RISM as “Symphonies–C major; Manuscript copy; GB-Lbl Add. 17785” by Anonymus. RISM 806426578
Probable
Matches a Menuet from Isis (LWV 54/45) note for note; an eighteenth-century copy of a Lully piece is plausible despite the 'symphony' heading.
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 · vl · 9 of 9 pitches agree
''4G4.G6{FG}/4.A8bB4A/FDG/''4G4.G6{FG}/4.A8bB4A/FDG/also RISM 1001154660 1.25.1 Menuet
also RISM 450117088 1.1.1
also RISM 455037234 1.1.1 [III, 6] Menuet.
also RISM 900020642 1.1.1
Catalogue data and incipits come from RISM (Répertoire International des Sources Musicales), CC BY 4.0. Incipits are rendered with Verovio. Source and data: https://github.com/aaymeloglu/rism-attributions.