In my turkish campaign one of my faction heirs had a "sword of mohammed". In his retinue, picture of a sword etc. etc. which gave it's bearer +1 piety and +2 command, it passes between leaders unlike any of the retinue members that are people.

Thought that was kind of cool, and something i havent' noticed from playing any other factions (spainish/scottish) anyone else found any more items like it?