1917 DWM - Luger Newbie

[bradrsi]

Hey guys...hopefully I am posting to the correct board. I am a gun collector but have never ventured very far into older guns. I recently purchased a luger and this is what I know about it. After I explain, please let me know your thoughts and or input. I will include some photos. The gun is stamped 1917 and DWM on the top. The serial number is 4 digits with no prefix or suffix. It has the number 1 above the serial number on the barrel and the magagine. The safety reads "Gesichert". The serial numbers match everywhere including the magazine. However, the rear large connecting pin has a different two digit number than the other parts. One thing that I am not sure about is the numbering under the serial number on the barrel. It looks like 383 under the serial number. It has unit markings on the side of the gun and a total of 10 proof marks that I can find on it. I would love to know what the gun is worth but I am not an expert in this field. I was really excited because it was in such good condition and all of the numbers matched UNTIL I saw the connecting pin. Is it possible it is the original pin? Is it coincidental that it has 383 under the serial and a 33 on the connecting pin? What does the "1" mean? Any and all comments and input are appreciated. Thank you.