Rare, Silurian Proetus Trilobite - Estonia

This is a very rare, proetid trilobite (Proetus concinnus osiliensis) from the Middle Silurian of Estonia. It's partially enrolled but would be about .8" long if outstretched and is very 3D with excellent shell preservation. The limestone around is has been nicely sculpted so the piece displays well without the need for a display stand. There is some restoration to the right genal spine.