I have one of these -- it seems to be a bit of an oddball in the CZ line. It is a CZ 452 (stamped on the receiver), but on the bbl is BRNO Super 2500. I have no authoritative information, but I have been told that they were built on a contract for Egypt or Turkey? I have also heard that they were made for sale in the far east for target shooting -- don't know which, if either, story is true.
The physical characteristics are, I think, a little different than the standard LUX, for one thing they have a recoil pad (kinda wonder why a recoil pad on a .22). The one I have has a long bbl, 29 1/2" IIRC, with a hooded front site, and a ladder type rear site. The stock is apparently beechwood, with an orange tint and a decent grain, and is in the European "Hogback" style.
Mine is highly accurate -- the limitation on accuracy is definitely the shooter.
In short, a very nice rifle. I snapped it up just because it seemed like an interesting variation on a nice rifle line, as I already had a CZ 452 American that I really liked. My gunshop had just 2 -- I don't think they are a standard CZ model, so I don't think you can order one.
If anyone has any more authoritative information on the origins of this model, I would appreciate the details.