These are anticlastic, systematic, hydromatic... why, it's Greased Lightnin! Available in three sizes; small, medium and large. Small: 1 3/16" in diameter. Medium: 1 7/16" in diameter. Large: 2" in diameter.
Sterling silver or 14kt gold fill.
Choosing a selection results in a full page refresh.
Press the space key then arrow keys to make a selection.