Hello Mark, and welcome to the forum.
I'm not specifically familiar with this coin, but applying general grading principles takes me to MS-64. Luster and color are very good and there are only a few light contact marks. It is possible there is a slight amount of friction visible in the center of the standing Liberty figure, in which case the grade would go to AU-58. It looks mint state to me.
This coin takes a big jump in value if it makes an MS-65 grade. If it were my coin I'd send it to PCGS or NGC for grading. If you intend to sell it you will probably maximize the sale price if it has been "slabbed" by one of the top two grading services.
Beautiful coin!
