A good enough little pistol. The CZ50 was the first generation of a small .32 acp pistol designed for military/police use. The later CZ70 was basically the same gun with minor mag-related changes incorporated and, it seems, better metallurgy. I had one and it was OK.
Magazines are almost impossible to find, but springs are now available from Wolff Springs. Mine was more accurate than a friends Walther PPK.
It's a novelty, and most of us who get a C&R FFL will spring for one early on. You'll probably play with it a while, and once the novelty has worn off, let it set in the gun safe.
It's small and heavy. If you are considering it for carry or personal defense, the Kel-Tec P32 is probably cheaper, smaller, lighter, and more reliable. If it's just to play with, have fun.
Note: many CZ-50s, if fired a lot will begin to show galling on the slide and frame where the slide pushes back the hammer with each shot. The raised metal can be sanded or filed off, but eventually, the gun might just quit functioning. That said, I doubt that you'll ever shoot one THAT much.
Note: for a just a bit more money, you can probably find a nice CZ-82 which is a larger, more sophisticated, more powerful, and more attractive weapon -- and one that arguably is a good candidate for a self-defense application. (It's 9x18.) I'd recommend the CZ-82, but would NOT buy another CZ-50/70. The CZ-82 is a serious weapon, and generally VERY accurate.