To C0FFINCASE

http://forum.logicalgamers.com/sell-trade/42598-selling-horns-demon-come-quickly.html
Based on the (come quickly) I'm assuming its hacked which means you definitely can't sell it.
I don't know currently what can and can't be sold for certain so no infractions or bans yet.
@Zoid, don't talk like you're a mod

I wasn't Thomas posted that i forgot to make it a quote .moteShades:

You can sell items and gold, It could be legit so lets not make judgements yet.

EDIT: read coffins post, nevermind for now.