Markings
The actual year of manufacture of any particular Lanchester can be found stamped in small almost indistinguishable numbers next to the crossed flags military proof mark on the top of the rearmost magazine housing flange.
Sterling-made MK.1 Lanchester guns are marked on top of the magazine housing as follows:
- Lanchester
- MK.1
- SA.
- XXXX
('S' indicates Sterling manufacture and 'A' indicates serial number prefix)
Read more about this topic: Lanchester Submachine Gun