types of wesi mentioned above can be best identified by somebody who is an empu keris or at least a pandai keris. Or maybe by people who live around an active empu. Those are types of "tosan aji" that make up what keris is all about. My guru would call the tosan aji as the essence of a keris and this is what we call the "soul" of a keris. Without a tosan aji, a keris is soulless and it may be called just an 'ageman' or worse as 'keris kerisan' (keris-like object)
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