Jacquaire's Axe is part of the Jacquaire's Battle Uniform quest.

Thain's Axe of Flames is an Easter Egg.

Thorwyn's Club is an Easter Egg.

Albion is given as a reward if you make the correct choice in The Outlaws of Slater's Grave quest.

Enlightened Iron is an Easter Egg.

Hack is given as a reward for the Where is the Blacksmith? quest.

The Finished Prototype is given as a reward for the Jacquaire's Revenge quest.

Shadow Sword is part of the Babylon 5 Ship Easter Egg.

The Orbus is the reward for completing the full series of Loromir's quests in Drakenden.

The Scale of a Dragon is the reward for the Dragon Scale quest in Alkazaba noc Draco.