It is a Balinese wedung, as VVV, BluErf, Battara and Naga Sasra have noted, and identical to the drawing in v. Zonneveld as pointed out by Battara.
What was throwing me astray was the markedly clipped blade, the heavy use of brass (especially those little inlays along the spine which are reminiscent of Thai work), and the extensive koftgari (?) work on the blade. It was obviously not a
Javanese wedung (as Ariel noted), but a Balinese ceremonial wedung makes sense -- never seen one of these before and I would guess they must be uncommon.
Maybe next time
