What Model CZ 452 ???

Is there a marking on the CZ 452 .22 cal rifle so that you can tell if its an American,Lux,etc. ? Been trying to buy a used CZ mod. 452 and,when asking if its an American,Lux,Silhouette by phone,no one seems to know. How can I tell which one is for sale if the owner doesn't know?? Thanks for any help.