Berry Mentats (Fallout 3)

An Archives Prize Voucher, found in the National Archives, can be traded for Grape Mentats, Berry Mentats, or Orange Mentats. Notably, Berry Mentats do not have the Perception bonus that normal Mentats bring, but they look all the same.

Note: This item cannot be used to acquire additional skill points when leveling up, even though a higher Intelligence grants additional skill points.