The releases in this series have prefix W, which may refer to Willem Mengelberg’s first name.
| number | artist | title | year |
|---|---|---|---|
| W 09903 L | Concertgebouworkest | Beethoven, Symphony No. 6: Pastorale | 1960* |
| W 09904 L | Concertgebouworkest | Beethoven, Symphony No. 7 | 1960* |
| W 09908 L | Concertgebouworkest | Franck, R. Strauss | 1960 |
| W 09910 L | Concertgebouworkest | Schubert | 1960 |
* An asterisk means the year of release has been confirmed.