You will find these sets nowhere else. The first prototype touchtone sets were made in this style (see picture linked on this page for an early Bell System advertisement featuring this style of set), before the body was redesigned. Our sets have the standard 12 button configuration and work like standard modular phones, but with a distinctive style. I create these sets by adding a touchtone dial to a 500 set and using a special dial bezel. This is a favorite: you get the look of an old set (along with having a set that is actually vintage) with the functionality of a touchtone dial.