Back away slowly :-)
DDR Lugers are, IMO, the single largest and the least understood of all the Luger variations. The programs (and there were many separate programs) of refurbishing, rebuilding, restoring, and even the manufacture of new Lugers in the DDR began circa 1947 and continued even after the Reunification, in the newly created nation of Germany.
That’s over fifty years of periodic Luger re-manufacture for a host of different purposes, using a host of different refurb/restore plans, that produced at least tens of thousands of serviceable Lugers that were spread around the globe for many different purposes.
When it comes to DDR Lugers, expect to find anything. There just aren’t any rules.
Just for fun, here is a pop quiz. The photo slide show at the end of the following URL is a DDR Luger. It has three visible characteristics that identify it as a DDR rebuild. What are those three characteristic?
http://s295.photobucket.com/user/Kyr...%201936?sort=9