This variety is from the Clinton Head family. Only 3 examples of this variety have been documented and that has held steady for at least a decade. Many varieties from this family are similarly rare. All 3 examples of this variety were struck on billon planchets.
 
This example is not going to win a beatuy contest, but it still exhibits valuable VF details under some rough surfaces. Nevertheless, a combination of detail and rarity are hard to come by with varieties in this family.