Catalogued in RISM as “Concertos–A major; Manuscript copy; D-GZsa Mus. 29f” by Anonymus. RISM 1001377007
Probable
The same repeated-note figure as a Tessarini concerto, but the anonymous copy begins with what is the comparator's second bar; too little melody to call it the same music outright.
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 · vl 2 · 9 of 12 pitches agree
'{8AC,BA}/{'AAAA}/{AC,BA}/{'AAAA}/{A6AG}{8AF}/{'8AAAA}/{AC,BA}/{'8AAAA}/{AC,BA}/{'A6AB}8{''CD}/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.