As you and others above mention, this is a subject worth posting. First of all, if that Turkish Ball Butt pistol, with the imitation lock is in your possession, I think you should remove the lock and send the stock and barrel to me for further analysis. LOL.
I have generally viewed the Tourist pistols as either pre or post 1950. It's amazing how much work was done to the earlier specimens for a tourist item. And yes, you will see the earlier ones utilizing original locks (and occasionally hardware) with new stocks and barrels. Often the barrels are simply a piece of pipe shaped to fit. I have some photos for reference, but am away from home on business at present. I'll post some photos when I return on April 8.