Catalogued in RISM as “Concertos–D major; Manuscript copy; Wq deest, HelB deest; D-Bsa SA 4731” by Anonymus. RISM 469473100
ProbableAttribution uncertainAlready named in the record
The anonymous record says the title names C. P. E. Bach but his authorship is not established (Enßlin). Its opening matches the E-flat concerto Wq 35 (HelB 446, RISM 703000219) a semitone lower, which supports Bach but as a transposed version the relationship still needs checking.
Catalogue flags:
Attributed copies compared (1 of 1 encoded incipit match):
1.1.1 Allegro. · org · 13 of 19 pitches agree
=22/{8.''D3''C'B}{8'AA}{8.'A3''C'B}4'A/8-{8''DEF}{8.''F3''AG}4''F/4'A{6'GFED}2'A=22/''{8.E3DC}{8'BB}{8.B3''DC}4'B/8-{''EFG}{8.G3BA}4G/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.