Pulled the lock off on the right side and found it was stamped with an "H". Similarly, so is the reciever group and the barrel group. I had made an assumption that this gun was serial numbered as H11 or HT11. Given the appearance of the gun and also the single H stamp now found in several places, I'm wondering if this is indeed a Max Neumann gun. If so, what would that mean in terms of history and reliability?