This ring is pictured in the Overstreet Toy Ring Price Guide, Third Edition and this is the actual ring used for the photo. It is from 1992 and Overstreet listed it as a "Prototype" crediting it to "Bob Burden", who is known for both Mysterymen and as the creator of Flaming Carrot Comics. The ring's interior band has small copyright symbol and the word "Knox" meaning unknown to us. Although not marked the ring certainly appears to be Sterling, it was probably unmarked due to its prototype nature. Dark Horse Comics has published Burden's work. Mint and seemingly unique. From the Robert M. Overstreet Collection. Comes with COA.