This Specimen has been sold.
.9 Inch Partial Tyrannosaurid Tooth, T-Rex
Here is a partial tooth of a Tyrannosaurid from the Hell Creek Formation of Montana. It maybe of the species Tyrannosaurus rex or Nanotyrannus lancensis though many dinosaur paleontologists believe they are actually just the same species (see video below). It has a repair through the middle of it but has decent enamel and some good serrations along the edge.