I think it would be cool to have this added as I haven't seen anything mentioning the "War Ship" item.
Most people I mention it to don't even know what it is.
More information on this item can be found here:Did you know?
- The oldest of all untradeable discontinued items, and considered one of the rarest items in the game, is the "War Ship" discontinued in 2004 with the transition to RuneScape 2. It was once found in Glough's house in the Gnome Stronghold and had an instantaneous respawn rate.
War ship - The RuneScape Wiki
As you can see most of what I wrote was copied/pasted/edited from that wiki article.