Picked this up at an antique store today. Rubbing it with a DMT 325 instantly brings up a rich milky slurry. Surface is very smooth. Used it as polishing stage after a pyramid progression with a Norton 4/8. I'm new to this, and have never actually seen a coticule in person, so would appreciate opinions. Thanks in advance.Name: IMG_2347.jpg Views: 370 Size: 40.7 KBName: IMG_2348.jpg Views: 389 Size: 28.3 KBName: IMG_2349.jpg Views: 387 Size: 30.2 KBName: IMG_2350.jpg Views: 376 Size: 30.4 KBName: IMG_2351.jpg Views: 364 Size: 40.1 KB