There are two driving factors which elevate value in the investment grade Redline world and they are rarity and condition. If you are carefully building your own investment grade portfolio I encourage you to save as a seller because I endeavor to sell nothing other than original near mint and mint cars that are right in the center of high end criteria. One can look at this example and clearly see that it wasn't played with and stored where it would escape the ravages of time and touch. Who will be the next steward?