One of my longest Philippine swords is this sansibar or matulis, equal how you would call it, it's 80,5 cm inside scabbard and 76,5 cm without:
http://www.vikingsword.com/vb/showth...hlight=matulis
Also very long is this tenegre:
http://www.vikingsword.com/vb/showth...hlight=tenegre 78,5 cm inside scabbard, 74 cm without.
Regards,
Detlef