Hey GGs! Chanced upon this on Youtube. Not sure if you guys know about this code but I'm sharing it just for the benefit of those whom don't.
1. /join museum
2. Talk to Valencia, click on the special codes thingy
3. Type in PaladinWho7331805
It's an AC item so you can store it in your bank for free. Keep your eyes open for any major release coming your way *ahem ahem*.
Edit : You can click on it after you equip it. It'll turn into a sword or something if I'm not wrong.