You might want to ask a mod to move this to the workshop if you don't get much feedback on how to tackle it.

I'm actually interested in their thoughts as well -- I've seen two great blades at antique stores in almost-identical condition. Unfortunately, I considered the condition to be bad on account of the uneven wear. You can see on both the edge and the spine that the toe end got much more attention when being honed.

If it's not that difficult to correct I might head back to those stores because one was a DD Wonderedge and the other was a Red Imp.