Catalogued in RISM as “Symphonies–G major; Manuscript copy; CH-EN Ms A 131” by Anonymus. RISM 400003944
Probable
Identical in rhythm and grace notes once the repeated group is expanded, but the opening is repeated Ds with a neighbour-note figure, too little melody to count as the same music on its own.
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 Allegro assai · vl 1 · 9 of 9 pitches agree
''8GDDDDDDD/!4DgF8ED!f/8G{8''GDDD}{DDDD}/4Dq8F{ED}4Dq8F{ED}/{G'B}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.