Split raised panel

No info on the door but I can tell you why it split .."Neither half of the split panel can be moved". The only recourse you have at this point is to leave it like it is. If you feel it has historical or monitary value it is best left alone. I say this only because of the fact that the panel is secured to the stiles and rails. This could be considered to be a trade mark of the maker and if it is, there will be other split panels just like it. This is what an investor would be looking for.