Best side and venter of SIN 7.2. A fine, wholly-septate internal mould with 5 whorls showing the ribbing well and the sutures in good relief and detail on both sides. From Charmouth, Dorset, UK.
Size: 33 mm diameter on block 42 mm x 37 mm.
Size: 33 mm diameter on block 42 mm x 37 mm.