In 1909, the Franz Berwald Foundation commissioned Ernst Ellberg [sv] to reconstruct the score from 4-stave sketches containing indications for orchestration.
Towards the end of the century, Nils Castegren [sv] reviewed Ellberg's reconstruction and published an "urtext" for Bärenreiter.
While Berwald gave clear indications for the woodwinds and strings, such as "detailed notations ... indicating when certain wind instruments play in unison with the respective string parts or in a different octave,"[1] where he wanted brass and/or timpani, Berwald would merely write the names of the instruments.
However, Berwald did indicate the tuning and register of the brass and timpani at the beginning of each movement.
[2] The work is in three movements, and lasts about 29 and a half minutes per Berwald's indications of duration (from which metronome markings could be extrapolated).