I found this 1967 quarter with three small interlocked rings on the heads side. They kind of resemble Olympic rings but there was no Olympics that year. I can't seem to find anything about this when searching online. Does anyone know anything about it?
First, welcome to the neighborhood! It's hard to find anything specific about unknown damage on an internet search because the damage was caused by someone (or some thing) of unknown origin. It's just post-mint damage (PMD).
Very interesting Paddy. The information you gave is new to me. Thanks for the information. The name Borromean Rings sounds like something you would expect to see in space. Maybe in Star Trek. LOL