I've searched and searched but I can't find anything like this lock anywhere (i found it lying around in my dad's shed). I think the closest thing I've seen is an abloy lock, but it's not exactly the same.
Apologies for the poor photos, my cheap digital camera refuses to focus on what I point it at





It has no brand name or anything on it at all, but it seems quite sturdy. You can't see it on the photo but the cylinder is made up of lots of discs, kinda like the abloy locks.
Does anyone know what it could be? or even better - how to pick it?
Any help much appreciated,
Bill.