Vintage thimble made of whalebone, often call scrimshaw thimble. Thimble is adorned with a sailing ship on one side and lighthouse on other side. Image is etched into whalebone. Looking closely at thimble with magnifying glass, you can see the pits and ridges of whalebone, Thimble is in mint condition, no chips, no cracks. Purchased in early 1980s, Hawaii.