Catalogued in RISM as “Symphonies–B♭ major; Manuscript copy; MEX-SCHamp Sa-Sn-04-23” by Anonymus. RISM 120000486
Same music
A one-leaf violin part: its B-flat Andante is the Andante (incipit 1.2.1) of the F-major symphony RicG F4 (op. 13/2), not a separate symphony.
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 Andante · vl 1 · 29 of 29 pitches agree
''8F-G-/{8.E6C8D}6-'F}/{BA''C'B}{''DCEC}/{'8.B''6C'8A}6-{F}/''{DCED}{FEGE}/{8.D6E8C}-/8''F-G-/{ECD}6-'F/{BA''C'B}{''DCEC}/8.{'B6''C8'A}6-F/{''DCED}{FEGE}/{8.6DE8C}-/also RISM 1001036367 1.2.1 Andante
also RISM 1001049770 1.2.1 Andante
also RISM 280001849 1.2.1 Andante
also RISM 990024170 1.2.1 Andante
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.