Catalogued in RISM as “Symphonies–D major; Manuscript copy; CZ-K 418” by Anonymus. RISM 1001247889
Probable
Same melody a whole tone higher than a Dittersdorf symphony in C (RISM 1001034975), with its grace note written out: a transposed copy.
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 Allegro · vl 1 · 10 of 10 pitches agree
1D/2FA/8{''DqE6FE}{8DD}{DDDD}/4BA2-/1'C/2EG/6{''CDED}8{CC}{CCCC}/4A^CG^C2-/1'C/2EG/also RISM 1001122059 1.1.1 Allegro assai
also RISM 1001369351 1.1.1 Allegro assai
also RISM 402009739 1.1.1 [p.3:] Allegro assai.
also RISM 451506003 1.1.1 Allegro assai
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.