The listing, Authentic Lego Duplo Primo Building Stacking Blocks for Baby or Toddler has ended.
Here is a lot of colorful Lego Duplo Primo stacking blocks for baby or toddler. Perfect size for small hands. These stack easily and are well made. I believe these are no longer in production so you can say it's pretty rare. I tried to take pictures of the brand name the blocks (see blue and green blocks). All are authentic Lego brand, except the purple cat face block. I am not sure where that come from, but you can stact it on top of any bricks. What you see is what you get.