The colors & shapes are interesting. I have friend who uses them as art work, but I'd like to know more about original use and possible identify these 3. The ceramic/porcelin do not have any labeling or marking & the large ones look like "Mickey Mouse" style, all of which is intriguing. I'm not sure of exact age but they were part of the collection of a retired electrician from Iowa. These also have extra insulating loops & groved middle inside compared glass ones.