Some place in my piles of debris I have a similar gun...kind of. Its a K205,xxx gun, and its living in a black box. A while back we had a discussion on those boxes. I believe SmithNut preferred to call them pastel boxes. The theory he was operating under (and probably correct) was they simply faded to black.
But just for balance, my ratty old K22 was refinished when I bought it, and I paid the full $2000 asking price just to get it. My only regret was that I didn't also by the M19 sitting beside it. Same price, too.
You don't pay too much, only too soon. In my situation, I was hunting down engraved and inlaid guns. Different rules apply.