undines:Two carved oyster shells, Cornelis Bellekin (attributed to), c. 1670 - c. 1700, with sc
undines:Two carved oyster shells, Cornelis Bellekin (attributed to), c. 1670 - c. 1700, with scenes from Greek mythology in low relief: Perseus on his winged horse rescuing Andromeda, and the nymph Scylla reaching out to the sea god Glaucus, Rijksmuseum -- source link