Yes it has had a T**T work on it.
The frame and barrel look bad but are useable.
The cylinder realy needs replacing, it is now a little smaller in diamiter than a MK 1.
By about 0.6 mm at the worst, and 0.3 mm bigger at best
It still works, every thing is tight, a little too much play at firing but lines up.
I have shot light loads and it works.