19th Century Folk Art Painted (Extra Large) Oyster Shell with Sailboats, Lighthouse and Dutch FlagThe manner and relative fineness of this folk art (likely sailor made) shell painting says 19th century for sure. I've always got an eye for a good folk art painting on a shell, but this excellent seascape, purchased from a dealer in Maine, was an especially happy find, all the more so for having been painted on an oyster shell and an extra large one. With a Dutch flag flying from the lighthouse, so one presumes painted while at sea, far from home.