I purchased it from a button dealer from New York City years ago in Paducah Kentucky at a National Quilt Show, did you ever go to that quilt show?
All I know is it is a silver over brass Geisha Japanese Girl, probably taken off of some royalty garment . She is 2 inch in diameter ,has a small dent on back
If any of you know anything else about this button let me now. I had never seen one like it and haven't seen one since . I have never cleaned it with any cleaner