Catalogued in RISM as “Overtures; Manuscript copy; MEX-Mahn E26-T1-V5” by Anonymus. RISM 1001042458
Probable
The second-violin incipit of this 'Obertura 10' follows the first violin of the Sinfonia of Vinci's Artaserse (Rome 1730) for three bars, rhythm included, then moves to F where the first violin repeats E; a second violin part, so a full match is not expected.
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 · vl 2 · 18 of 24 pitches agree
'4D8-6{DC}8{D,A'DF}/i/'4E8-6{ED}8{E,A'EG}/4F8-6{GF}8{FDFA}/'4D8-{6DC}{8D,A'DF}/4D8-{6DC}{8D,A'DF}/4E8-{6ED}{8E,A'EG}/4E8-also RISM 452504412 1.1.1 Sinfonia. Allegro
also RISM 452515086 1.1.1 Sinfonia. Allegro
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.