Talk:Symbol of Avarice/@comment-1852943-20130516150036/@comment-667748-20130516162015

It can be obtained more than once per playthrough, it's a random drop.

As for the definition of "Unique Item", AFAIK (regarding armors), it just means "not part of a set": Unique Armor. But I don't think there is any real notion of "uniqueness" relative to Dark Souls.