Indeed, well done. What lock is it?
I have (or maybe had, as I cannot now find it) a lock from a Milner fire safe. Copy of Chubb seesaw detector, made by Thomas Turner.
Fortunately no wrong key had been used in it, as the reset notches were not deep enough to allow releasing the detector. The lock would have been bricked! It directly locked the door, no large bolts and handle. The body had been ruptured, spilled filling around was rain-soaked, a real mess. Sadly the safe plate was already gone.
