Akro Agate Transparent Spiral Ribbon Auger Corkscrew Marble

This Akro Agate Transparent Spiral corkscrew marble has a pale blue ribbon of glass that just about extends into the center of the marble, and would therefore be called an auger. The contrast between the clear, and the semi-transparent powder blue glass is not strong, hence it is hard to discern the spiral in the photos and even somewhat in real life. The marble is a 5/8 inch in diameter and is an uncommon color combination. There are a couple of fleabites, and the glass has lots of air bubble and air bubble dimples. It grades Mint 9.7.