19th Cent Bone Pin Set w/ Concentric Circle Heads (4)

A lovely and most unusual set of four bone bridge pins from the 19th-century. Rather than having pearl dots inlaid into them, they’ve got concentric circles lightly cut into the tops with a diminutive inset depression in the center of each. 1” length below the head, 13/64” dia. below the head, 3/16" dia. at the tip. $195