Three Carved Scrimshaw Teeth, Tall Ships

North America, 20th Century. Three scrimshaw carved whale and walrus teeth with nautical scenes of whaling ships. 1 monogram signed TS (unidentified), 1 polychromed, monogrammed signed JM (possibly James McDonald (Sr. or Jr., Plymouth, ME) and dated inside 1974.4.14., 1 unmarked. All with polished bases to sit level. Approx. h. 3.875", w. 1.5", largest
Condition Report: Chips, natural fractures.