I'm considering a 36 3 1/2 leg
Buffalo nickel and have seen slabbed ones (all from Pcgs) and some say fs901 as well as ( fs019 ). Then one was graded just plain old xf40. What do these mean? Are there different varieties and if so,what is the most desirable?I do know what xf40 is but there is no other description as far as fs...
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