It is very unlikely that this work is public domain in the EU, or in any country where the copyright term is life-plus-70 years. However, it is in the public domain in Canada (where IMSLP is hosted) and other countries where the term is life-plus-50 years (such as China, Japan, Korea and many others worldwide). As this work was first published before 1923 or failed to meet notice or renewal requirements to secure statutory copyright with no "restoration" under the GATT amendments, it is very likely to be public domain in the USA as well.
|Composition Year||1920 (January-November)|
|Genre Categories||;; ; ;|
|Work Title||Violin Sonata No.1|
|Opus/Catalogue NumberOp./Cat. No.||B.42|
|I-Catalogue NumberI-Cat. No.||IEB 32|
|Year/Date of CompositionY/D of Comp.||1920 (January-November)|
|First Performance.||1921-02-20, Artur Rubinstein, Paul Kochanski|
|Copyright Information||Possibly public domain in parts of the EU and other 70 pma territories.|
|Average DurationAvg. Duration||29 minutes|
|Composer Time PeriodComp. Period||Early 20th century|
|Piece Style||Early 20th century|
High plate number is somewhat confusing, looking to see if it was either co-published or published earlier with a lower plate number (usual explanations, I think)...