This ancestor Aso motif can be seen in a lot of book about Borneo tribes art .. all written in english language with many pics and also accurate description about meaning and symbolism (for example: hornbill and dragon, borneo and beyond, the eloquent dead,.... ).
IMO to put a keris on this kind of board is the same to put a little ET in crib...but of course is only my personal taste
...Here some keris hits with (i suppose) borneo patterns
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