Just curious which C&Rs are more likely to be found naked (without import stamps). I've been able to find everything made before the CZ 52 without import stamps pretty easily. I've seen a few CZ 70s without import stamps. I've yet to see a CZ 82 without one. I've been holding out on buying a CZ 52 until I could find a naked one, but have been without success.
When exactly did the import stamp begin to be required? Also, I keep reading that a "bringback" would exempt certain guns from requiring an import stamp. Someone care to shed some light on the subject?