Walther 6.35 Pistole Model 1

Hi , I have a walthers 6.35 pistol from WW1 that research is leaning me towards it being a 5th generation model 1 . I would like to start by saying the picture I have listed is of one I found in an article that is identical to the one I am selling . I currently dont have a camera but will have one probably tomorrow and will try to get actual pictures up . I am pretty sure this is one of the super rare guns by Walthers . I am looking to sell it but very few information on this gun and what information there is , is not very clear due to all records being destroyed from the russians . On the gun it reads exactly , on the trigger guard it reads the numbers 8083 and towards the tip at the bottom of the barrell it reads 083 . The loading chamber is on the right . On this side ( where the chamber is ) is N and a symbol , this is stamped on this side in 3 differant places . One of them is hard to see but I located it and it is inside the chamber . On the other side it reads verbatim , Selbstlade - pistole. Cal. 6.35. Walthers - patent. ( im finding out the dots are important ) . The word Walther is in a curvy banner underneath all of that . The hand grips are black what I believe is plastic but I suppose it could be hard rubber but not sure . On the grips it reads Caliber 6.35 Im disappointed to mention I dont have the clip :( I was reading the only certain way to tell the late model 2 from the model 5 is the grooves in the rifling ( one has 4 the other has 6 ) . It is hard for me to see in the barrel and unsure how many there are . I am unsure if this is a 5th generation model 1 , model 2 or model 5 . Any information on this gun would be greatly appreciated . I found an interesting article that I believe is on this gun and does have the exact looking gun as the one I have but they talk about so many other of the models and guns I am not sure . On this sight the gun they have showing in the picture is as far as I am concerned the same exact gun . This is the link to the site ************************************************* Please feel free to email me with any questions . Thank you