This is uncut banknotes or uncut currency sheets. It forms of two new bills that have not been cut. It equipped with a folder and printed certificate of authenticity. It is limited so the price continues to rise. This kind of collection is hard to find. Uncut sheets are sold for more than their respective face values. For some people it can be in addition to the investment. On the other hand, some people display it on the desk, cupboard or their personal museum. This is me, I put it on my collection rack.