Pete,
OK! OK! I believe you. Whats a 'CH' anyway? How would they put a Swiss Cross/Sunburst on a chamber that had been dated? Date stamps on the chamber are usually put in pretty deep just to be ground off. How would you tell a modified Swiss Luger that you are looking for from a counterfeit from a questionable dealer since, in reality, they are both counterfeit, modified or whatever else you want to call them?
Big Norm