http://www.mahoodsculpture.com/sculpture-mafia-wars/
Mafia Wars: Can you have multiple collections of the same category (cigars, sculptures, ties…)?
For example, I already have a collection of cigars in the vault. If I keep getting more cigars, can I have another collection of cigars for an additional +2 energy points? Otherwise I’d just focus on gifting my extra items.
Is there anyone out there who has done this?
no, as of right now on 3/25/09 you can’t have more than 1 collection of the same kind in the vault.