Impressive indeed. Just a note that either this is not the original hilt or at least the baca-baca have been changed. The sheath seems to fit like a glove so i would image that it was indeed made specifically for this blade. The blade may be older than all the rest though. It's original intention may have been as a parade weapon or perhaps it was made for a very large man, but it seems to have found its way to being a parade blade none the less considering the suassa and clamshell. I wouldn't imaging that the American coins point to it being for an American. Dimes would not be considered a valuable token by an American, they are common and of low denomination, but they could more likely gain some kind of talismanic nature by a local Moro.
Nice find Dave!