Arundel: Solaria had a crown, Sevastian still has it. Check with Solari, he's the one who gave it over. All the nice dangly things for each of the Unified Houses. Kind of a neat image I get in mah head.
It's more of a fancy headdress. I mean, Malus and Sevastian were never Kings, just Arbiters. PeL had a real crown, but I'd probably have to tango with Saul for it. I guess that makes you an ousted Lurian Arbiter, grats!