What base is this weapon?

[AestheticDeath]

a wickedly barbed black vultite trident veined with dusky silver

Inspecting says it is a polearm.

Looking at the AvDs on play.net it does not match any pole arm.

Swinging it at my own characters I get an AvD of 28 vs brig, and 31 vs robes.

Is play.net wrong? Or what.

[Latrinsorm]

A trident has different AvDs onehanded and twohanded. If inspect didn't say "it's a modified" whatever, then the noun is correct - it's a trident.

[AestheticDeath]

Ah, OK thank you.