| Factory | Number | Cross Interchange Type | Relevance |
|---|---|---|---|
| WAGNER | BP921 | Direct Cross Interchange | 2 |
| PHILIPS | MBC921 | Indirect Cross Interchange | 1 |
| PHILIPS | 921BC | Indirect Cross Interchange | 1 |
| SYLVANIA | 921BP | Indirect Cross Interchange | 1 |
| WAGNER | WL93474 | Indirect Cross Interchange | 1 |
| WAGNER | WL30921 | Indirect Cross Interchange | 1 |