These saki cups are hand painted and have no ID.  Very delicate and thin.  3" diameter and about 1.5" tall.  One is perfect and the other has some fleabites on the rim on the left side.  They are hard to see...but you can feel them with your finger.  
      Preloved...but these saki cups looks great to me..please note the flaw on the rim of one.   
Let me know if you want additional photos.