1916 model have some questions about it? any help would be nice
 

I have a 1916 9mm original all matching luger with serial number # 5350.. i have found what most of the marking mean on the gun from this websight.. like..... 15. German military receiver proof. Found on DWM Lugers 1914-1918. But i also took a few pics of other marking on the gun maybe someone can help me out? i know lugers in good shape are hard to come by and this one is in amazing shape.. also the clip has matching number with the gun. thanks for any help or info you can give me..also what kinda of value for this gun for insurance purposes

I am pretty sure you have an original condition piece. An overzealous cleaning by someone in its past has removed the white material from the "GESICHERT" safety marking, so that will be a point of alarm for some folks. It is difficult to assess value from photos and several more views of the overall gun will be required to even give a ballpark estimation of worth. I do not do value estimations but additional photos may help others give you an idea.