Keris Sundang Melayu with twist core

[Spunjer]

Is anybody even remotely interested in looking for factual historical information to supplement their interest in the weaponry of this area?

in regards to the source of technology, evidently not. but as far as the trading that happened prehispanic and eventually, during the arrival of the spaniards, this has been discussed early on.
now,for those of us that are into this particular area or subject and would like some refresher, we can type in "scott", "warren", "laarhoven", "majul", "saleeby", etc. in the search query on this forum, for starters.