Catalogued in RISM as “Symphonies–D major; Manuscript copy; I-Rc Mss. 6245/12” by Anonymus. RISM 850026338
Probable
Identical over the comparator's four encoded bars once its repeated group is expanded; the comparator is a keyboard sonata, so the relationship (arrangement or shared material) is open.
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 Adagio · fl · 6 of 8 pitches agree
4'''D-2-/4E-2-/4-''DFxG/AAAA/{8A3-AB'''C}'''4D-2-/4E-2-/4-''DFxG/!{8AAAA}!f/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.