Hello
The serial number is 5854. (or that is what I am told)
The information about the Frame type I got from here
>LugerForum Discussion Forums
>> Research Archives
>>> Early Lugers (1900-1906)
>>>> Early Frame Tutorial
It could be the type V Frame though, hard to tell for sure from the pictures.
I am including a couple of Close up's. This is the best I can do at the moment.
Left Side
Right Side
Thanks for the help
Charlie