Straight from Gibson Guitars Historic Re-issue guitars come Gibson Gears new Historic Spec series - parts that have been specially designed to replicate the original parts used by Gibson in the late 1950s. This Historic Potentiometer has been designed to be vintage-accurate, specifically in terms of its dramatic audio taper. With a dynamic sweep from 1 to 10, youll notice a difference on every single level. For anyone whos ever said, They dont make em like they used to, heres some proof to the contrary.