Copper-alloy ring with a hook-and-eye fastening

Bronze key-ring, max diam. 8cm., but very lop-sided and bent. Circular section, max. diam. 3mm, tapering to thinner wire at catch. The catch is a spring-loop and hook fastening, which presses apart. On one side the wire is bent up into a simple back-bent catch; on the other side the terminal is bent at right-angles to the catch into a big loop, and the extra wire coiled tightly against the base of the loop to make it all secure and tight.Found at right knee linked with ring M 6726, and in association with broken key M6724.