The bowl in Figure 3 is Fenton’s "Polka Dot", characterized by staggered rows of spots and a band of white opalescence around the crimps. This pattern I believe is circa 1955. At the bottom of Figure 4 are two bowls made in an entirely different way. These bowls, one cobalt and one cranberry, started life completely cased in white - which was then ground away in a slightly concave manner (thumbprint) until it was through to the inner colored glass. Because these little ground windows or optic eyes are concave, when you look into them, you see many small images of the spots on the other side. That is why they are often called "thousand eyes". The third bowl in this picture is a more conventionally formed thumbprint in white opalescent. It is believed that all three of these bowls are late models - possibly made in Japan. A good tip off to their origin is their ground smooth bottoms. Both Fenton and Jefferson did make bowls similar to the one at the top which I believe were called "Coinspot". Next, in Figure 5, are two antique bowls from that venerable English glass house - Stevens & Williams. These are formed with reverse thumbprints in the threaded glass ground - yielding an interesting dot effect which was called "raindrop". Finally, in Figure 6, on the left is another Japanese cranberry bowl in a large thumbprint motif. Wright made similar bowls but in their classic wafer footed style. On the right is another imported "thousand eyes" - this one ground through the ruby exterior to the clear interior. In the top bowl, captured controlled size bubbles of air between two layers of glass also give a dot effect. This is likely from the Italian maker Barovier and made in the 1950s. Well, I hope this little tour of dot embellished rose bowls has given you a basic understanding of this decorative form. It is by no means meant to be comprehensive as this was an immensely popular theme and made in many shapes and colors. I have purposely not touched on "hobnail" bowls, for instance as these could be the subject for an entirely new article.