Rare Estoniops Exilis Trilobite - Northeast Estonia

This is a very rare, Estoniops exilis (Eichwald, 1858) trilobite from Northeast Estonia. It's only the second one that I've seen offered for sale and it's a beauty. It's 1.1" in length with unique white shell preservation against a reddish-brown shale. The rock is covered in bryozoan fragments and there is a nice Porambonites kuckersensis (Bekker, 1921) brachiopod fossil in the corner of the piece.

A real collector specimen.