Halberd +2

Halberd +2 is an enchanted weapon. It deals 1d10 +2 points of piercing damage, has +2 thaco and a speed factor of 7. The weapon is 3 lbs lighter than a normal halberd. This item appears in Baldur's Gate II: Shadows of Amn and this item will probably appear in Baldur's Gate II: Enhanced Edition. It's for sale at the Adventurer's Mart, Ribauld sells it.

In-game description
"Consisting of a cleaver-like axe blade mounted on a staff averaging six feet in length, the halberd is the oldest and most often used pole-arm. It is best described as a cross between a spear and an axe. Magic has been used to forge this particular weapon, gifting it with enhanced abilities to slaughter foes."