I suppose it depends on the price, doesn't it? The market for those has just about topped out @ 350-400 for ex. used, all matching, few dings. Lesser condition and mis-matched parts goes down from there. A pristine as issued, unfired may go 450-500. I gauge this by what I've seen offered on the web. I don't see much more appreciation but who knows what will happen in 20yr. Browse around and see what you can find
Just a word of warning: If Mitchell Mausers, inspect very, very carefully and offer 30% less.