Here's my take...
1. It has been reblued, or at least some of the parts have been reblued. If you look at the ejector rod and rear sight, you can see that the bluing has started to turn plum.
2. Has well worn post war magnas.
3. One of the higher registration numbers I have seen.
4. Lots of wear on the gun and the right side of the trigger looks to have some rust or discoloring on the CCH. The most of the color case hardening has been removed or has worn off of the humpback hammer.
5. All of the numbers that are photographed appear to match.
6. Over priced. It has been on my watch list since it first came on GB and most serious RM enthusiasts have lost interest.
Even with all of the above, it is a cool specimen and if priced right, I would gladly welcome it into my safe...
My $0.02