Noone answered my request for help with the Ashiko, so I would like to post it here.
I would like to sand and refinish the drum.  I do not want to stain, I just want to clean and highlight the natural wood. 
Should I just clean it and use furniture polish?  Should I apply a polyurethane spray to it in addition?
Can anyone tell me what kind of wood is used in the Ashiko?  All I can say for sure is that it is stave construction.
I included a picture in the 
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