I would only treat it with crystalline wax, if you remove the patina it doesn't get any better. I would recommend to remove the wooden grip, this is a recent addition of the wrong model, it looks weird.
it should have a thin spiral grip on it. fe see attached example of a 1790 VOC Rotterdam cutlass and for others please see the thread:
http://www.vikingsword.com/vb/showthread.php?t=22313
best,