Catalogued in RISM as “Symphonies–B♭ major; Manuscript copy; I-OS Mss.Mus.B 4714” by Anonymus. RISM 850607317
Same music
The one encoded movement matches: Pamela (RISM 840015171, 1.2.1).
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 And.e Grazioso - All.o con spirito · vl1 · 15 of 15 pitches agree
'4DEF/G{8.G6A}{8BA}/{GFEDEF}/4E+{8.E6C}''4DEF/G8.G6A8BA/GFEDEF/4E8.E3C8D-also RISM 850033517 1.1.1 Andante grazioso
also RISM 850610816 1.1.1 And.te Grazioso
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.