Because the upper and lower do not match, no matter what other parts match most collectors would consider it a shooter and that limits the value. However from the last photos it seems to have significant finish remaining and it may even be original finish. Absent better photos it's hard to say value. I look at lots of shooters and buy way too many; IMO actual shooter sales tend to run about $1,000 and go lower and higher based on condition. More discussion of shooter values here
http://forum.lugerforum.com/showthread.php?t=39023