Katana +1

Katana +1 is an enchanted weapon. When its compared to a normal katana, it has +1 bonus to damage and THACO and the speed factor and the weight of the weapon are reduced with 1. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate: Enhanced Edition. It's not known where this weapon is for sale or who drops this weapon.

In-game description
"Katana +1 To enchant a katana is no simple process. Unlike conventional weapons, the katana is already a near-perfect fighting sword. To improve it usually requires a sacrifice, perhaps a dying samurai might beg a Wu Jen to infuse his fighting spirit into the spirit of the katana. The wielder of an enchanted katana, such as this one, must respect the customs of Kara-Tur and of the samurai who once carried this blade into battle. Not doing so could drastically change one's luck for the worse."