40004603, Marlborough, 398, A man (Hephaistos?) making a helmet. He is seated on a wreathed altar and his anvil is of similar form. He raises a hammer. Behind it, two spears, one inverted. Dress around his shoulders and leg, the helmet is crested. Ground line., Belvoir Castle, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 398, Agate, 18th cent.