I'm assuming it's a keso 2000 (if someone knows for sure, please let me know)
(As you can see, I tried to tap a screwthread in the housing on the left, and the tap broke; the metal on the inside is just too tough)
Although I haven't been able to pick these yet, there aren't any security pins inside. But some pins are at the sheer line in rest, that makes it tricky.
The key looks more complex than the lock really is; the deep dimple topleft in between two smaller dimples has no purpose in this lock. The same goes for the telescoping looking dimples. I assume they're part of a master keying system.
The housing has no holes for the pins; the toppins and springs go into the bar inserts.
Of course, like always, the real challenge is putting it back together
