Yes Andersok you are correct, I saw the same thing on the movement. This is a recent purchase and I don't know the watches' history. Recently I used our forum to ask a question on a 23 I saw previously with a replacement TK watch case. I chose not to add that particular watch to my collection, for I want to try to keep my collection as authentic as possible. It was suggested in the forum to marry the movement to an authentic case, but I thought I would rather search for another 23 instead and that's when I found this one. Now I have seen in other discussions within "My Bulova" that a year or two of separation between the case and the movement is acceptable/normal, so I thought this was an acceptable item to add to my collection? If this is not true, then I apologies and the watch status should be changed to non-conforming. With this said, I know this is good information for the library and it does help other collectors; however, I probably will be eliminating this 23 from my collection if you think this movement would not have found its way to this case through normal traditions.