Since this work was first published after 1922 with the prescribed copyright notice, it is unlikely that this work is public domain in the USA. However, it is in the public domain in Canada (where IMSLP is hosted), the EU, and in those countries where the copyright term is life+70 years or less.
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Scores and Parts
Arrangements and Transcriptions
For Double bass and Piano
Heilbronn: C.F. Schmidt, 1926. Plate C.F.S. 4391
Public Domain - Non-PD US [tag/del]
||Zweite Konzert für Kontrabass und Kammerorchester (in einem Satz)
||Findeisen, Theodor Albin
||Early 20th century
||Double Bass and Chamber Orchestra
Early 20th century unless composed before 1914?
Accompaniment is actually chamber orchestra (though parts may have had to be rented from CF Schmidt).