I have a firearm turned in for testfire for a system here at our lab. I cannot locate it in our reference materials. I think this is due to my lack of knowledge of where to start. There is only only word on this weapon and it's under the thumb safety "Gesichert". It looks like the old German pistols from around WWII. I'm not sure what round it chambers (which is the main problem). It has numerous pieces of the serial # stamped on different parts the way you would see a lot on the Russian pistols/rifles. Perhaps if I had an idea what Gesichert was/meant??