Hi Allen, The Liberty seems to be less thick at the rim, the rim is the part of the coin that forms the circle around it. If you hold a nickel between your finger and thumb and view the edge the liberty seems to have a uniform thickness, while the buffalo and Jefferson will vary in thickness. Did you ever try a buffalo nickel? Steve > *********> On an 1890 Edison/Keller Electric cylinder phono, I have to use the original > nickels (Liberty/V) - modern ones don't fit.> > Allen> www.phonobooks.com