The question is, I don't know a thing about coins. I don't know how they're evaluated, the history, etc. I'm not interested in this for monetary value, because it is a deeply sentimental gift to me. I just want to know a little more about the coin's history, etc. I did a quick Google and found that there appears to be 4 different versions. the 1890 (Philadelphia), 1890-S (San Francisco), 1890-O (New Orleans) and 1890-CC (Carson City). I'm pretty sure that this is the Philadelphia version.
I've included a couple of pictures I just took of the coin. Appears to be in very good shape except for having a dent/smudge on the top (can be seen from the picture of the back of the coin.)
So, calling all coin geeks. What can you tell me about this coin? What makes the different versions unique?