It may be a tanged head stuck in a heavy ferrule .
The profile is similar; the Mandaya spears in my collection have blades that are sword thick (1/4") or less; much thinner in cross section than a Moro spear.
I really haven't seen enough of these to get much of an opinion on standards .
I remember Bill had acquired a beautiful example in the not so distant past .
Paging Bill M.
Here we are .
http://www.vikingsword.com/vb/showth...=mandaya+spear