Daryl, if "low mileage" and accompanying high condition indicates little use--which it probably does in comparison to a gun that's been back to the maker numerous times, but well-maintained--then it's logical that such a gun should have a higher value. On the other hand, guns of relatively equal "mileage", one basically ignored, the other frequently "freshened up"--I believe you'll find that the latter will command a higher value. "Never a screw turned" seems to mean a good bit more on this side of the pond. To me, if a gun's been used a good bit, I start to wonder why the screws were never turned, and what one might find when they are.