The 3UM (smallest) is very rare. The one in the photo was attached to a steel pin with a metal alloy that filled all around the petticoat and nearly flush with the bottom. I think the 1UM with red stripe in the center is more rare than the ones with the stripe at the bottom. See the next photo for blue UM styles. Click on this link to see the blue UM styles. [id=196363138]