These preforms are made from a classic Burlington Chert. The best one has a well respected Jerry T. Dickey Certificate of Authenticity. This group of paleo Clovis preforms were found by Arron Morrath or John Kunkel. I bought Arron's collection a while back and these were part of said collection. Arron had found many pieces in Illinois and Missouri and a few pieces of the group were found by John. This style of preform is a must have for any Early Archaic / Paleo collector.  These were found on the same site, but not as a cache. These are large, very collectible preforms in excellent condition and with the great paper, they will make very collectible Early Archaic / Paleo artifacts. 
 
Sizes: 3.63; 4.05; 3.69 inches in length.   A23