Forty Antique Slag Marbles

This listing is for a group of antique slag marbles (there's 3 or 4 I'm not so sure about). Slags (also called onyx) are beautiful examples of some of the first machine-made marbles made in the United States in the early 1900s. They are not mint, most have obviously been played with, but still look remarkable for their age. Slags were made by 4 companies: M.F. Christensen, Akro Agate, Peltier, and Christensen Agate. I'm not expert enough to identify which makers are represented, but they are a great collection of American history. You will get all of the marbles pictured.