Info on my Luger

[PearlJamNoCode]

Hello,
My grandfather gave me this 1916 Luger. I believe it to be a German military model. He has owned it for about fifty years after buying it from his brother for $10. I am interested to know anything I can about it. I can tell you that it is still in excellent working order, we use it occasionally at the pistol range and it is as accurate as any modern 9mm pistol I've used. All parts are original and stamped "47" except the magazine which is stamped "3073 c".

Thank you.