Group of Four Whaler Made Inlaid Ivory Rings, circa 1850, a band with ratchet-type carving and open-dot work, the 2nd is carved ovals with silver dot inlays, the 3rd with blue and red inlaid “Mary” plaque flanked by fish flukes, the 4th inlaid with a heart within 2 blue lines and flanked by green vines.