Catalogued in RISM as “Concertos–B♭ major; Manuscript copy; B-Nimep Ms 73” by Anonymus. RISM 706001606
Unresolved
The same rising-arpeggio figure and rhythm as Tobi's concerto in G, a major third lower; RISM titles the anonymous copy B-flat major but its incipit has three flats, and the figure is generic.
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 Allegro moderato · vl 1 · 13 of 13 pitches agree
{3,B'CD}/8E-G-B-G-/E-,B-4-8-{3B'CDE}/8F'{3DEF}/8G-B-''D-'B-/G-D-4-{6DEFG}/8A-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.