This looks like tamarind wood to me, but I might be wrong.
Do you have all the broken pieces? If you do, you can put everything back together with super glue, fill any void with (preferably dark color wood) saw dust+super glue, sand and refinish to match. You can touch up the hilt imperfections with the same method as well. Alternatively you can strip the rest of the finishing by hand sanding and refinish as desired. If I were you I would finish it in this direction: buff with fine steel wool -> mix of spar varnish and paste wax.
Please remember: non drying oil and wood combination equal problem
