elenbr, the guns listed on tradex all seem to be utility guns as King Brown mentioned earlier, and in 12ga. I suspect they are post war guns and cranked out with little care. Aside from the obvious differences in engraving and finish I suspect the quality is higher throughout as it was made before the commies took over Hungary. They do not seem to have the top profile associated with the 3d bite either. I know I have seen a lot of guns with price tags about 5 times what this one cost me which aren't as well done.
Be interesting to know more about pre war models from FEG as they obviously had a capability to build some very nice guns.
