Go to http://www.willoughbycoal.com/luger.html for images. All parts match last two numbers of serial number. However, magazine is not original. Looking for a value
I don't know a heck of a lot about Lugers and their values can swing radically based on small issues. This looks like an Imperial to me but the barrel is refinished as well. I don't know the serial ranges for the civilian or not either. Well in short (or maybe this is long) I can't help much I would suggest you contact (e-mail) Bob Simpson (Simpson LTD) he's second to none on these.