| Brand | Muller Martini |
| Model | 321 | Built | 1988 |
| Type | Saddle stitchers |
| Categories | Bindery and Finishing |
| Reference number | 5441 |
| Machine number | 03095 |
| Location | Zaandam, NL |
| Description | 4 feeders type 306, Cover feeder type 1528, 2 x Hohner stitching head, Trimmer type 306 |