How to post pictures
http://forum.lugerforum.com/showthread.php?t=22994
You can upload directly from your device.
Pending photos, you seem to have a mostly matching Mauser military Luger. Replacing non-matching parts can be done, but takes effort and time with no guarantee of success. Even if replacement parts with the correct two digits are found, many including me would argue the pistol is still less than an all-matching collectible example.