Button's Wig

Button's Wig is a wig found on top of Button Gwinnett's cabinet at the end of the Stealing Independence quest. When equipped, the wig grants a bonus to the Intelligence trait as well as the Barter and Speech skills, but subtracts a point from the Perception trait. +5 Barter, -1 PE, +1 IN, +10 Speech.

The intelligence bonus gives +2 to the Science, Medicine, and Repair skills (assuming you do not already have a 10 intelligence). This is the only headgear other than Lincoln's Hat that gives bonuses to these skills.