thewastedwalrus wrote:
I think they were trying to steal the wealth held inside of the main vault, not any particular item or reason other than massive amounts of valuables.
"The vault contains a huge array of coins, trade bars, items of jewelry, and other valuables—the robbers’ true goal." - Page 15
I figured the other valuables were the robbers' true goal, and so there is some specific items they were looking for in there, along with grabbing money and jewelry and what not.