Lovely Item, well done.
I would leave as is personally.
I can and do repair items
http://www.vikingsword.com/vb/showthread.php?t=26784 but for this I would see no point as I would not want to take it back to original shape with the brass fittings etc. I would be able to give it a good go but it will never be right and your eye will always be drawn to the repair.
Even to oil would not help in my mind as it is stable and oil would not serve any real purpose.
Leaving items a month before doing anything is one of my rules, fools rush in (me being the fool on many an occasion in my past, before i learned a bit of patience)
Keep well,
Ken