This is item from an estate in Laguna Beach CA that contained an incredible collection of art.
This is a 18th or 19th c etched horn scrimshaw cup or beaker with the profile of most likely and English military or political figure. I thought he looked like Alexander Hamilton but it does not appear to be him. Then I thought perhaps an Englishman, that is my guess. No other marks on the cup. And to be clear, this is obviously horn and not ivory.
It is just about 5" tall and as you can see with an item this old, it has some issues. There are small nicks along the rim and a larger chip there too. It also has a fissure on back that you don't see when displayed. The bottom of the cup is glass and not sure if that was added later or is original to the piece. Really nice and interesting antique.
18th 19th C Etched Horn Cup W Military Political Profile Scrimshaw Beaker