A fine complete adult internal mould with test in the umbilicus and on part of the body chamber. It is fully developed on one side and the venter with the umbilicus on the other side partly occluded. The body chamber shows slight uncoiling of the umbilical seam and has a complete flared peristome on both sides and the venter. The characteristic row of tubercles shows well on both sides.
Size: 63mm diameter
Size: 63mm diameter