| Aircraft | Vickers Wellington IV |
| Serial Number | Z1257 |
| Markings | GR-J |
| Burial/Memorial Country | United Kingdom |
| Burial/Memorial Place | Polish Air Force Memorial, Northolt |
| Grave Reference | . |
| Epitaph |
| Phase | 1 |
| Panel Number | 120 |
| Service Number | P.784774 |
| Service | Polish Air Force |
| Group | 1 |
| Squadron | 301 (Pomeranian) |
| Trade | Wireless Operator |
| Country of origin if different | Poland |
| Korzon Z (Sgt) |
| Kosior E S (Sgt) |
| Perkowski P J (F/O) |
| Siuda E (Sgt) |
| Zakrzewski S (F/O) |
| Start Date | 12-03-1942 |
| End Date | 13-03-1942 |
| Takeoff Station | Hemswell |
| Day/Night raid | Night |
| Operation | Kiel |
| Reason for Loss | Lost without trace with crew of six |