Skyline Set - Solid 14K tops - The tops of the set is plastic with a 14K gold overlay. These overlays are normally smooth and they are frequently engraved with names or initials. This version is referred to the $64 pen due to the cost at the time. There is also a model with a solid gold top ad pen body. Due to the soft nature of solid gold and the construction of these models they are prone to dings and other damage.