Good to know!First of all, do not mix the edge and rim of a coin. The edge is the outer part of a coin and extends over the entire circumference of it. It can help to identify a coin (also for the blind people) but can also help to know if the coin itself is genuine. The rim is a raised border (sometimes dotted) on both sides of a coin, also called "listel" in French. It protects the pattern engraved on the piece against wear. It is possible to find coins with no rim (like some ancient coins). Main edges types Plain Plain-reeded Reeded Reeding Slant-reeded right Center slanted reeding right Slant-reeded left Center slanted reeding left Herring Bone right Herring Bone left Lettered Security edges Security 1 Security 2 Security 3