Mid Century Swivel Leather Armchair Tetrad Nucleus C1970A striking swivel armchair which was part of the Tetrad Nucleus range dating from around the 1970s and presented in great vintage condition. Tetrad retailed alongside the likes of Pieff and Howard Keith and were one of the top notch producers of armchairs and we have to say the Nucleus range was about their best This chair benefits from being carefully used and possessing a cracking profile. The images really display the quality of the craftsmanship