RuneScape Classic Wiki
RuneScape Classic Wiki
The main RuneScape Wiki has an article on: Iron Long Sword
The Old School RuneScape Wiki also has an article on Iron Long Sword.

An Iron Long Sword is a long sword which can be wielded at level 1 attack. They require level 21 smithing to make from 2 iron bars, granting 50 smithing experience. They can also be purchased from Varrock Swords.

Dropped by

They are dropped by:

Monster Combat level Quantity Rarity
White Knight 56 1 2Common