It sure looks like there is an "S" mint mark on the reverse. If this is so, then it should be easy to figure out which VAM it is because there are only 14 listed and it is a Far date coin for sure which will help narrow it down to the 5 Far Date VAMs that are listed. http://www.vamworld.com/1889+S+Obverses
1889-S are rare to find and it looks like you found a nice AU/BU coin. I would get this one graded if you have the money to send it in. Anacs would be a good choice for this one.
1889-S are rare to find and it looks like you found a nice AU/BU coin. I would get this one graded if you have the money to send it in. Anacs would be a good choice for this one.


























