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				The pamor seems washed out at some places.
			
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 Quite possible, here and there the design is raised above the level of its background: “Like a carving in relief.” 
One of the guess that it that it could be: walang-sinunduk comes from a Dutch book:  "Pamoratlas” by:  Ing.ean.Veenendaal. 
Page 86 shows three drawings/pictures of: pamor walang –sinunduk
the middle one shows some similarity in appearance, but I found so far nothing else to compare. 
 
So I am still open to any suggestions