[Edward Tinker]

Things are not as simple as lugers went from WW1 to the police or army.

Some were placed into storage, some destroyed, some went to the army, some to the police. Many were issued years after they were put into storage (and had been hidden from the allied forces).

The 1920 is a gov't marking, and is coincidental for being on a police luger. Not all lugers received the 1920 stamping, officers who owned lugers did not receive unit stamps or the 1920 marking, and those lugers hidden by the military may or may not have received the marking.

There are good books that talk about the safety installs and you can do searches on the forums about them.....

If your top does not match the bottom, then it is not correct. If for some reason it had been 'swapped' out before the retrofit, then it would have been matched up then. Lugers did not leave the peace time armory without the gun being all matched.

Ed