I know it’s at least *20 years old, 1 inch, purchased out of a barrel of marbles in North Carolina. In the sun the swirls look very red, but in any other light the swirls appear rust colored. Unfortunately I’m out of town and I don’t have any other mibs to put next to it for comparison. A little damaged, can’t find a pontil. Any guesses? My only guess is Jabo Classic.