This is a complete specimen of Albertella helena, acquired from the DeRosear Collection. This trilobite has both free cheeks intact, which is extremely unusual. The bug is very inflated for this type and has good detail preserved. The trilobite is nicely centered on the rectangular plate of shale that also contains a second trilobite. This is a collectible example of this rare Cambrian trilobite, formerly a part of the DeRosear Collection (Number 513).