Is a strawed Luger more valuable?

[Tony Sandrin]

Originally Posted by DavidJayUden

Nuthin's simple...
dju

I'm starting to realize that!

Unrelated, but I've also noticed that some pistols have an extractor that appears reddish in color. It is numbered consistent with the rest of the gun but just has a different color. Based on some research I did, it sounds like this was fairly common starting in the 1938 Mausers. Was this just a different heat treatment that Mauser adapted for the extractors to make them more durable? Would this have been done on any other of the pistols internal parts as well, or just the extractor?