I have never seen one of these before. It is a McCoy planter in a pattern called "icicle" or "icicle drip". The icicle part of the planter is unglazed, so contrasts with the shiny blue base. I saw it at an antique shop and passed it by at first. I couldn't stop thinking about it, so had to go back the next day. Fortunately it was still there. I thought it was the perfect planter for a succulent, so it now resides on a shelf in my bathroom, where it looks great with the blue tile on the walls.