This is an original Wico XHD2520 1-cylinder magneto for a Wisconsin air cooled engine.  It is flange mount and everything seems to be in nice shape.  It is CW, clockwise rotation and turns over smoothly with no noticeable bearing wear.  The impulse works just as it should and it puts out a nice, hot, blue spark.  These Wico XDH2520 magnetos are a bit hard to find in the wild or even at swap meets so if you've been looking for one for a restoration here's a really nice one.  Let the pictures be your guide.  I can be reached at 262 573 193 1 if you'd like to talk about it.  Good Luck.